Q: What is the negative version of the number 21,636,644?
A: -21,636,644
Negative numbers are usually written with - in front of them. They represent a number that is less than zero.
Here are more examples of negative numbers in sequence:
| 21,636,642 | 21,636,643 | 21,636,645 | 21,636,646 |
| -21,636,642 | -21,636,643 | -21,636,645 | -21,636,646 |