64656410631456 has 96 divisors (see below), whose sum is σ = 193970554339968. Its totient is φ = 18473134233600.

The previous prime is 64656410631409. The next prime is 64656410631481. The reversal of 64656410631456 is 65413601465646.

It is a tau number, because it is divible by the number of its divisors (96).

It is a junction number, because it is equal to n+sod(n) for n = 64656410631396 and 64656410631405.

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, 148564186 + ... + 148998758.

It is an arithmetic number, because the mean of its divisors is an integer number (2020526607708).

Almost surely, 2^{64656410631456} is an apocalyptic number.

It is an amenable number.

64656410631456 is an abundant number, since it is smaller than the sum of its proper divisors (129314143708512).

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

64656410631456 is a wasteful number, since it uses less digits than its factorization.

64656410631456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 655994 (or 655986 counting only the distinct ones).

The product of its (nonzero) digits is 37324800, while the sum is 57.

The spelling of 64656410631456 in words is "sixty-four trillion, six hundred fifty-six billion, four hundred ten million, six hundred thirty-one thousand, four hundred fifty-six".