Answer:
No, infinity is not a number, in the mathematical sense. It is a symbol for "unlimited". As such it has uses in various theories in math and in physics. The simplest proof is adding a real value, such as 1, to infinity. Just as zero times any number is still zero, infinity plus any value will remain "infinity".
First answer by Yoshirools. Last edit by Dfoofnik. Contributor trust: 2555 [recommend contributor recommended]. Question popularity: 4 [recommend question].