What comes after quadrillion?

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

• million (6 zeroes)
• billion (9 zeroes)
• trillion (12 zeroes)
• quadrillion (15 zeroes)

But what comes after quadrillion?

The answer is: quintillion. A quintillion has 18 zeroes. That’s a lot of zeroes: 1.000.000.000.000.000.000.

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

• sextillion (21 zeroes)
• septillion (24 zeroes)
• octillion (27 zeroes)
• nonillion (30 zeroes)
• decillion (33 zeroes)
• undecillion (36 zeroes)
• 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.