56515257612 has 72 divisors (see below), whose sum is σ = 155942094672. Its totient is φ = 17115177600.

The previous prime is 56515257611. The next prime is 56515257647. The reversal of 56515257612 is 21675251565.

56515257612 is a `hidden beast` number, since 5 + 6 + 5 + 1 + 5 + 25 + 7 + 612 = 666.

It is not an unprimeable number, because it can be changed into a prime (56515257611) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 604662 + ... + 691842.

It is an arithmetic number, because the mean of its divisors is an integer number (2165862426).

Almost surely, 2^56515257612 is an apocalyptic number.

It is an amenable number.

56515257612 is an abundant number, since it is smaller than the sum of its proper divisors (99426837060).

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

56515257612 is a wasteful number, since it uses less digits than its factorization.

56515257612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88839 (or 88834 counting only the distinct ones).

The product of its digits is 630000, while the sum is 45.

The spelling of 56515257612 in words is "fifty-six billion, five hundred fifteen million, two hundred fifty-seven thousand, six hundred twelve".