Q: What is the negative version of the number 66,663,221?
A: -66,663,221
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:
| 66,663,219 | 66,663,220 | 66,663,222 | 66,663,223 |
| -66,663,219 | -66,663,220 | -66,663,222 | -66,663,223 |