Q: What is the negative version of the number 644,121,264?
A: -644,121,264
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:
| 644,121,262 | 644,121,263 | 644,121,265 | 644,121,266 |
| -644,121,262 | -644,121,263 | -644,121,265 | -644,121,266 |