56618182440 has 128 divisors (see below), whose sum is σ = 199828944000. Its totient is φ = 14210049024.

The previous prime is 56618182351. The next prime is 56618182471. The reversal of 56618182440 is 4428181665.

It is a happy number.

56618182440 is a `hidden beast` number, since 5 + 6 + 618 + 1 + 8 + 24 + 4 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1523530 + ... + 1560249.

It is an arithmetic number, because the mean of its divisors is an integer number (1561163625).

Almost surely, 2^56618182440 is an apocalyptic number.

It is an amenable number.

56618182440 is an abundant number, since it is smaller than the sum of its proper divisors (143210761560).

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

56618182440 is a wasteful number, since it uses less digits than its factorization.

56618182440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3083816 (or 3083806 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 45.

The spelling of 56618182440 in words is "fifty-six billion, six hundred eighteen million, one hundred eighty-two thousand, four hundred forty".