What is 4 with 21 zeros?

Learn how to shorten, say, and write 4 with 21 zeros!

In Numbers
4 with 21 zeros written out with all the zeros looks like this:

4 000 000 000 000 000 000 000

10 to the Power Of
This is how to write 4 with 21 zeros to ten to the power of:

4 x 10²¹

Scientific e Notation
You can also shorten 4 with 21 zeros down further to Scientific e Notation as follows:

4e21

Verbally
However, what most want to know, is how to read and say it correctly. The number 4 with 21 zeros is:

Four Sextillion

Big Numbers
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What is 4 with 22 zeros?
Check out the next big number on our list that we tackled.