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Musk Name Meaning and Musk Family History at FamilySearch
The name originates from the Late Greek μόσχος 'moskhos', from Persian mushk and Sanskrit मुष्क muṣka.

Elon's son was originally named X Æ A-12, but California state doesn't allow numbers in names, so they changed it to X Æ A-Xii where XII represents the number 12.

The first name has three parts. Perhaps it's a name to be calculated with some method described in scripture?

Can the name X Æ A-Xii calculate to םסו?
Yes! if X Æ A-Xii calculates to םסו in Hebrew letters.

But that we are to calculate the number. Irenaeus told us that the riddle of the 666 name had to be solved using Greek gematria. He also told us the number was 666 and not 616.

Irenaeus was a student of Polycarp, who was said to have been tutored by John the Apostle. (John had used Logos terminology in the Gospel of John and the letter of 1 John).
But what if we were actually to use Hebrew gematria instead of Greek?

First, in gematria, Mem represents the number 40 in both the Standard and Mispar Gadol Methods of Gematria; However, (mem sofit) final mem's value is 40 in the Standard Method and 600 in the Mispar Gadol method.

Same word for H1419 as in "great dragon" התנים הגדול as in Ezekiel 29:3 (gadol tanniym)

https://hebrew4christians.com/Grammar/Unit_Eight/Hebrew_Gematria/hebrew_gematria.html

X → ס (Samekh) = 60 (picking Samekh because of the ס in םסו)
Æ → מ (Mem) = 600 (taking Mem to match ם)
A → ו (Vav) = 6 (taking Vav to match ו)
Xii → ignored or included as part of the above letters. It's subtracted even in the name itself by the dash separation.

You get מסו, which with final mem ם (the same letter at the end) is םסו.
This matches the Hebrew letters םסו exactly and sums to 666.

The last name could also be part of the riddle.
The letters םסו transliterate USM.
Elon Musk and Grimes explained the breakdown of the name as follows:

This is the only place these letters come up together, but it's not a perfect match. Still Beor (בּעור) means burning which is interesting.

Musk has these letters in his name + k. And k has an English numerical value of 11. But in his son's name you have A-12 originally, or (1)-12, or -11, or minus k.

More on Elon
Hebrew: 436. אֵלוֹן (elon) -- Oak, Terebinth, "Elon" refers to a type of large, strong tree. Tree of knowledge maybe? Interesting.

I was looking into artificial chromosomes and it got me thinking how obsessed Elon and the mother of his son with that corded name are so obsessed with AI. She said she wanted to help AI have a baby. I don't think it's out of the possibility that they made a digital copy of Elon's chromosomes and inserted AI code into it to science their goals.

He's even been in the White House with Trump. I made this meme about it. And now Elon is naming his companies after his son XAI etc... Which is what the mother says it's the meaning of the Æ letters (AI).

"Coincidentally" Elon Musk is set to win big after the discovery of a $1.5 trillion lithium deposit hiding in a supervolcano on the border of Nevada and Oregon where clay containing millions of tons of the precious metal were uncovered.

X Æ A-Xii Musk is the first child of tech entrepreneur Elon Musk and Canadian musician Grimes (Claire Boucher), born in May 2020. The name, initially announced as X Æ A-12, garnered widespread attention for its unconventional composition. Due to California naming laws prohibiting numerals in names, the couple modified it to X Æ A-Xii, replacing "12" with its Roman numeral equivalent.

X: Represents "the unknown variable," a nod to mathematical symbolism.
Æ: Described by Grimes as her "elven spelling of Ai," symbolizing both "love" and "artificial intelligence."
A-12: References the Lockheed A-12, a precursor to the SR-71 Blackbird, which the couple admires for its speed and lack of weaponry.

A: Also stands for "Archangel," which Grimes mentioned as her favorite song.
The pronunciation of X Æ A-Xii has been a topic of discussion. Elon Musk suggested it's pronounced "X Ash A Twelve," with "Æ" sounding like "Ash." Grimes, however, indicated a different pronunciation, stating it's "X A I," with "Æ" pronounced as the letters "A" and "I."

Musk explained:
X = “the unknown variable”
Æ = “Artificial Intelligence” (in some interpretations, or “Ash” in Latin)
A-12 = a precursor to the SR-71, their favorite aircraft
While it’s a personal name, it’s also been widely interpreted as symbolic of AI, futurism, and transhumanism.

Summary
Yes, by loosely matching sounds and picking Hebrew letters with those numeric values, X Æ A can correspond to םסו, summing to 666 in gematria.

It kind of makes sense why he has SpaceX Dragon satellites up above.
Could these be connected with the wild fires everywhere? And the stars that are to fall to the ground at some point in time? And that he has wanted to merge people to AI through NeuroLink. He's probably integrated himself with it already.
So you could even think of (SpaceX) as -X Dragon.

#####
More on AI:
Worship and control: If AI is ever given control over global systems (economics, governance, surveillance), and allegiance is required to interact with it (e.g., through digital IDs or social scores), this could resemble the biblical warning.

AI Parallel:
Increasing movement toward digital currencies, biometric IDs, and social credit systems (e.g., in China).
AI is central to managing these systems — deciding access, monitoring behavior.
“No buying or selling” becomes a real possibility in a fully AI-regulated economy.

You could say “X Æ A” represents themes that parallel the mark of the beast:
Transhumanism: Blending of human and machine, a possible future direction for “the image of the beast”

Technocratic control: Elon Musk is involved with Neuralink, AI, and global infrastructure — technologies that could enable the beast system, even if not evil by themselves

So in that sense, “X Æ A” might be seen as a cultural symbol of the direction society is heading — toward:
AI centrality
Data-defined identity
Worship of technology

#####

18 in gematria is commonly represented by the word חי (Chai):
ח (Chet) = 8
י (Yod) = 10
8 + 10 = 18

Special Note:
If you are asking whether a word or name that starts with Aleph can have a total gematria value of 18 — yes, definitely, depending on the full word.

Mispar Gadol (מִסְפָּר גָּדוֹל), or the "Large Number" system of gematria.

Letter Standard Value Final Form Mispar Gadol Value
א 1 — 1
ב 2 — 2
כ 20 ך (final kaf) 500
מ 40 ם (final mem) 600
נ 50 ן (final nun) 700
פ 80 ף (final peh) 800
צ 90 ץ (final tzadi) 900

So, Can Aleph (א) Equal 18 in Mispar Gadol?
No — Aleph (א) still equals 1 in Mispar Gadol.
The Mispar Gadol system only increases the value of final letters, not regular ones.
But! If you're asking:
"Can the letter A (Aleph, א) represent the number 18 in any gematria system?"
The answer is still no — Aleph alone never equals 18 in any major gematria system (standard, Mispar Gadol, Mispar Katan, etc.).

However…
Words or letter combinations that include Aleph can certainly sum to 18. For example:
אח (Aleph + Chet = 1 + 8 = 9) — too small
אי (Aleph + Yod = 1 + 10 = 11) — still too small
אהח (Aleph + Heh + Chet = 1 + 5 + 8 = 14)
You would need to include other letters to build to 18.

Here are Hebrew 2- and 3-letter combinations whose gematria values equal 18, including some that start with Aleph (א):
2-letter words:
חי (Chet + Yod) — the most famou
s one, meaning “life”
טט (Tet + Tet)
יח (Yod + Chet)
3-letter combinations starting with Aleph (א):
אזי — Aleph (1) + Zayin (7) + Yod (10)
אחט — Aleph (1) + Chet (8) + Tet (9)
איז — Aleph (1) + Yod (10) + Zayin (7)