56566689189 has 16 divisors (see below), whose sum is σ = 75947418624. Its totient is φ = 37448924400.

The previous prime is 56566689161. The next prime is 56566689209. The reversal of 56566689189 is 98198666565.

It is not a de Polignac number, because 56566689189 - 2²⁴ = 56549911973 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56566689139) 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, 554974 + ... + 648944.

It is an arithmetic number, because the mean of its divisors is an integer number (4746713664).

Almost surely, 2^56566689189 is an apocalyptic number.

It is an amenable number.

56566689189 is a deficient number, since it is larger than the sum of its proper divisors (19380729435).

56566689189 is a wasteful number, since it uses less digits than its factorization.

56566689189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95368.

The product of its digits is 167961600, while the sum is 69.

The spelling of 56566689189 in words is "fifty-six billion, five hundred sixty-six million, six hundred eighty-nine thousand, one hundred eighty-nine".