56400635163 has 16 divisors (see below), whose sum is σ = 75414556800. Its totient is φ = 37493635200.

The previous prime is 56400635143. The next prime is 56400635173. The reversal of 56400635163 is 36153600465.

It is a happy number.

It is not a de Polignac number, because 56400635163 - 2⁹ = 56400634651 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56400635143) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 4491748 + ... + 4504286.

It is an arithmetic number, because the mean of its divisors is an integer number (4713409800).

Almost surely, 2^56400635163 is an apocalyptic number.

56400635163 is a deficient number, since it is larger than the sum of its proper divisors (19013921637).

56400635163 is a wasteful number, since it uses less digits than its factorization.

56400635163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16682.

The product of its (nonzero) digits is 194400, while the sum is 39.

The spelling of 56400635163 in words is "fifty-six billion, four hundred million, six hundred thirty-five thousand, one hundred sixty-three".