56861587618 has 8 divisors (see below), whose sum is σ = 93046234320. Its totient is φ = 25846176180.

The previous prime is 56861587613. The next prime is 56861587621. The reversal of 56861587618 is 81678516865.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (56861587613) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1292308788 + ... + 1292308831.

It is an arithmetic number, because the mean of its divisors is an integer number (11630779290).

Almost surely, 2^56861587618 is an apocalyptic number.

56861587618 is a deficient number, since it is larger than the sum of its proper divisors (36184646702).

56861587618 is a wasteful number, since it uses less digits than its factorization.

56861587618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2584617632.

The product of its digits is 19353600, while the sum is 61.

The spelling of 56861587618 in words is "fifty-six billion, eight hundred sixty-one million, five hundred eighty-seven thousand, six hundred eighteen".