64157023008080 has 80 divisors (see below), whose sum is σ = 156038674385664. Its totient is φ = 24485820057600.

The previous prime is 64157023008053. The next prime is 64157023008109. The reversal of 64157023008080 is 8080032075146.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×64157023008080² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42738404 + ... + 44214083.

Almost surely, 2^{64157023008080} is an apocalyptic number.

It is an amenable number.

64157023008080 is an abundant number, since it is smaller than the sum of its proper divisors (91881651377584).

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

64157023008080 is a wasteful number, since it uses less digits than its factorization.

64157023008080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86952924 (or 86952918 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 44.

The spelling of 64157023008080 in words is "sixty-four trillion, one hundred fifty-seven billion, twenty-three million, eight thousand, eighty".