What is 18 with 20 zeros?

Learn how to shorten, say, and write 18 with 20 zeros!

In Numbers
18 with 20 zeros written out with all the zeros looks like this:

1 800 000 000 000 000 000 000

10 to the Power Of
This is how to write 18 with 20 zeros to ten to the power of:

18 x 10²⁰

Scientific e Notation
You can also shorten 18 with 20 zeros down further to Scientific e Notation as follows:

1.8e21

Verbally
However, what most want to know, is how to read and say it correctly. The number 18 with 20 zeros is:

One Sextillion Eight Hundred Quintillion

Big Numbers
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What is 18 with 21 zeros?
Check out the next big number on our list that we tackled.