56610873978 has 8 divisors (see below), whose sum is σ = 113221747968. Its totient is φ = 18870291324.

The previous prime is 56610873947. The next prime is 56610874013. The reversal of 56610873978 is 87937801665.

56610873978 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

56610873978 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4717572826 + ... + 4717572837.

It is an arithmetic number, because the mean of its divisors is an integer number (14152718496).

Almost surely, 2^56610873978 is an apocalyptic number.

56610873978 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

56610873978 is a wasteful number, since it uses less digits than its factorization.

56610873978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9435145668.

The product of its (nonzero) digits is 15240960, while the sum is 60.

The spelling of 56610873978 in words is "fifty-six billion, six hundred ten million, eight hundred seventy-three thousand, nine hundred seventy-eight".