56591712504 has 32 divisors (see below), whose sum is σ = 157199202000. Its totient is φ = 18863904096.

The previous prime is 56591712487. The next prime is 56591712509. The reversal of 56591712504 is 40521719565.

It is a happy number.

56591712504 is a `hidden beast` number, since 5 + 6 + 591 + 7 + 1 + 2 + 50 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 56591712504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56591712509) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 130999119 + ... + 130999550.

Almost surely, 2^56591712504 is an apocalyptic number.

56591712504 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is an amenable number.

56591712504 is an abundant number, since it is smaller than the sum of its proper divisors (100607489496).

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

56591712504 is a wasteful number, since it uses less digits than its factorization.

56591712504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261998684 (or 261998674 counting only the distinct ones).

The product of its (nonzero) digits is 378000, while the sum is 45.

The spelling of 56591712504 in words is "fifty-six billion, five hundred ninety-one million, seven hundred twelve thousand, five hundred four".