64980715100 has 72 divisors (see below), whose sum is σ = 166350686208. Its totient is φ = 21560414400.

The previous prime is 64980715001. The next prime is 64980715123. The reversal of 64980715100 is 151708946.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1475552 + ... + 1518951.

Almost surely, 2^64980715100 is an apocalyptic number.

It is an amenable number.

64980715100 is an abundant number, since it is smaller than the sum of its proper divisors (101369971108).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64980715100 is a wasteful number, since it uses less digits than its factorization.

64980715100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2994555 (or 2994548 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 41.

The spelling of 64980715100 in words is "sixty-four billion, nine hundred eighty million, seven hundred fifteen thousand, one hundred".