56172889000 has 32 divisors (see below), whose sum is σ = 131444562600. Its totient is φ = 22469155200.

The previous prime is 56172888973. The next prime is 56172889033. The reversal of 56172889000 is 98827165.

It can be written as a sum of positive squares in 4 ways, for example, as 9041347396 + 47131541604 = 95086^2 + 217098^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28085445 + ... + 28087444.

Almost surely, 2^56172889000 is an apocalyptic number.

56172889000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

56172889000 is an abundant number, since it is smaller than the sum of its proper divisors (75271673600).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

56172889000 is a wasteful number, since it uses less digits than its factorization.

56172889000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56172910 (or 56172896 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 46.

The spelling of 56172889000 in words is "fifty-six billion, one hundred seventy-two million, eight hundred eighty-nine thousand".