Q: What is the negative version of the number 644,375,136?
A: -644,375,136
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:
| 644,375,134 | 644,375,135 | 644,375,137 | 644,375,138 |
| -644,375,134 | -644,375,135 | -644,375,137 | -644,375,138 |