56518281916 has 12 divisors (see below), whose sum is σ = 99375748360. Its totient is φ = 28125210960.

The previous prime is 56518281901. The next prime is 56518281979. The reversal of 56518281916 is 61918281565.

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, 33481551 + ... + 33483238.

Almost surely, 2^56518281916 is an apocalyptic number.

It is an amenable number.

56518281916 is a deficient number, since it is larger than the sum of its proper divisors (42857466444).

56518281916 is a wasteful number, since it uses less digits than its factorization.

56518281916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66965004 (or 66965002 counting only the distinct ones).

The product of its digits is 1036800, while the sum is 52.

The spelling of 56518281916 in words is "fifty-six billion, five hundred eighteen million, two hundred eighty-one thousand, nine hundred sixteen".