56618320916 has 12 divisors (see below), whose sum is σ = 99098956320. Its totient is φ = 28304333400.

The previous prime is 56618320907. The next prime is 56618320949. The reversal of 56618320916 is 61902381665.

It is a happy number.

It is a congruent 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, 1180310 + ... + 1227341.

It is an arithmetic number, because the mean of its divisors is an integer number (8258246360).

Almost surely, 2^56618320916 is an apocalyptic number.

It is an amenable number.

56618320916 is a deficient number, since it is larger than the sum of its proper divisors (42480635404).

56618320916 is a wasteful number, since it uses less digits than its factorization.

56618320916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2413534 (or 2413532 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 47.

The spelling of 56618320916 in words is "fifty-six billion, six hundred eighteen million, three hundred twenty thousand, nine hundred sixteen".