56861586408 has 64 divisors (see below), whose sum is σ = 155098206720. Its totient is φ = 17228433600.

The previous prime is 56861586407. The next prime is 56861586437. The reversal of 56861586408 is 80468516865.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (56861586407) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3707091 + ... + 3722397.

It is an arithmetic number, because the mean of its divisors is an integer number (2423409480).

Almost surely, 2^56861586408 is an apocalyptic number.

It is an amenable number.

56861586408 is an abundant number, since it is smaller than the sum of its proper divisors (98236620312).

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

56861586408 is a wasteful number, since it uses less digits than its factorization.

56861586408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29398 (or 29394 counting only the distinct ones).

The product of its (nonzero) digits is 11059200, while the sum is 57.

The spelling of 56861586408 in words is "fifty-six billion, eight hundred sixty-one million, five hundred eighty-six thousand, four hundred eight".