56861587620 has 72 divisors (see below), whose sum is σ = 179979299136. Its totient is φ = 14503824192.

The previous prime is 56861587613. The next prime is 56861587621. The reversal of 56861587620 is 2678516865.

56861587620 is a `hidden beast` number, since 5 + 6 + 8 + 6 + 1 + 5 + 8 + 7 + 620 = 666.

It is not an unprimeable number, because it can be changed into a prime (56861587621) 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, 6863202 + ... + 6871481.

It is an arithmetic number, because the mean of its divisors is an integer number (2499712488).

Almost surely, 2^56861587620 is an apocalyptic number.

It is an amenable number.

56861587620 is an abundant number, since it is smaller than the sum of its proper divisors (123117711516).

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

56861587620 is a wasteful number, since it uses less digits than its factorization.

56861587620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13734721 (or 13734716 counting only the distinct ones).

The product of its (nonzero) digits is 4838400, while the sum is 54.

The spelling of 56861587620 in words is "fifty-six billion, eight hundred sixty-one million, five hundred eighty-seven thousand, six hundred twenty".