56388978573669 has 24 divisors (see below), whose sum is σ = 95602420992000. Its totient is φ = 31351401213408.

The previous prime is 56388978573623. The next prime is 56388978573673. The reversal of 56388978573669 is 96637587988365.

56388978573669 is a `hidden beast` number, since 5 + 6 + 3 + 88 + 97 + 85 + 7 + 366 + 9 = 666.

It is not a de Polignac number, because 56388978573669 - 2⁸ = 56388978573413 is a prime.

It is a super-2 number, since 2×56388978573669² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56388978573619) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12095445669 + ... + 12095450330.

It is an arithmetic number, because the mean of its divisors is an integer number (3983434208000).

Almost surely, 2^{56388978573669} is an apocalyptic number.

It is an amenable number.

56388978573669 is a deficient number, since it is larger than the sum of its proper divisors (39213442418331).

56388978573669 is a wasteful number, since it uses less digits than its factorization.

56388978573669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24190896049 (or 24190896046 counting only the distinct ones).

The product of its digits is 98761420800, while the sum is 90.

The spelling of 56388978573669 in words is "fifty-six trillion, three hundred eighty-eight billion, nine hundred seventy-eight million, five hundred seventy-three thousand, six hundred sixty-nine".