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2023-10-27 Updated 2023-10-29 informational Edit on GitHub

What comes after decillion?

What comes after decillion? The answer is undecillion, with 36 zeroes. See the full list of large numbers from million to centillion.

Published by Start Debugging 1 min read

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This is quite a frequent question. You’ve got:

  • million (6 zeroes)
  • billion (9 zeroes)
  • trillion (12 zeroes)
  • quadrillion (15 zeroes)
  • quintillion (18 zeroes)
  • sextillion (21 zeroes)
  • septillion (24 zeroes)
  • octillion (27 zeroes)
  • nonillion (30 zeroes)
  • decillion (33 zeroes)

But what comes after decillion?

The answer is: undecillion. An undecillion has 36 zeroes. That’s a lot of zeroes: 1,000,000,000,000,000,000,000,000,000,000,000,000.

But there’s more. If you look past the undecillion, you’ve got:

  • duodecillion (39 zeroes)
  • tredecillion (42 zeroes)
  • quattuordecillion (45 zeroes)
  • quindecillion (48 zeroes)
  • sexdecillion (51 zeroes)
  • septendecillion (54 zeroes)
  • octodecillion (57 zeroes)
  • novemdecillion (60 zeroes)
  • vigintillion (63 zeroes)
  • centillion (303 zeroes)

Interested in how long it would take a PC to count to a trillion? Check out this article: Counting up to one trillion.

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