56775166401 has 32 divisors (see below), whose sum is σ = 79126806528. Its totient is φ = 36182321280.

The previous prime is 56775166391. The next prime is 56775166403. The reversal of 56775166401 is 10466157765.

It is not a de Polignac number, because 56775166401 - 2⁶ = 56775166337 is a prime.

It is a super-2 number, since 2×56775166401² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (56775166403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1232160 + ... + 1277406.

It is an arithmetic number, because the mean of its divisors is an integer number (2472712704).

Almost surely, 2^56775166401 is an apocalyptic number.

It is an amenable number.

56775166401 is a deficient number, since it is larger than the sum of its proper divisors (22351640127).

56775166401 is a wasteful number, since it uses less digits than its factorization.

56775166401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45501.

The product of its (nonzero) digits is 1058400, while the sum is 48.

The spelling of 56775166401 in words is "fifty-six billion, seven hundred seventy-five million, one hundred sixty-six thousand, four hundred one".