56388978573668 has 48 divisors (see below), whose sum is σ = 111769455522816. Its totient is φ = 24710933969280.

The previous prime is 56388978573623. The next prime is 56388978573673. The reversal of 56388978573668 is 86637587988365.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 329921696 + ... + 330092567.

It is an arithmetic number, because the mean of its divisors is an integer number (2328530323392).

Almost surely, 2^{56388978573668} is an apocalyptic number.

It is an amenable number.

56388978573668 is a deficient number, since it is larger than the sum of its proper divisors (55380476949148).

56388978573668 is a wasteful number, since it uses less digits than its factorization.

56388978573668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 660014364 (or 660014362 counting only the distinct ones).

The product of its digits is 87787929600, while the sum is 89.

The spelling of 56388978573668 in words is "fifty-six trillion, three hundred eighty-eight billion, nine hundred seventy-eight million, five hundred seventy-three thousand, six hundred sixty-eight".