56516974721448 has 32 divisors (see below), whose sum is σ = 144578307429600. Its totient is φ = 18400875490368.

The previous prime is 56516974721419. The next prime is 56516974721509. The reversal of 56516974721448 is 84412747961565.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27382254163 + ... + 27382256226.

It is an arithmetic number, because the mean of its divisors is an integer number (4518072107175).

Almost surely, 2^{56516974721448} is an apocalyptic number.

It is an amenable number.

56516974721448 is an abundant number, since it is smaller than the sum of its proper divisors (88061332708152).

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

56516974721448 is a wasteful number, since it uses less digits than its factorization.

56516974721448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54764510441 (or 54764510437 counting only the distinct ones).

The product of its digits is 406425600, while the sum is 69.

The spelling of 56516974721448 in words is "fifty-six trillion, five hundred sixteen billion, nine hundred seventy-four million, seven hundred twenty-one thousand, four hundred forty-eight".