56432172216 has 48 divisors (see below), whose sum is σ = 164113973640. Its totient is φ = 16123477440.

The previous prime is 56432172179. The next prime is 56432172221. The reversal of 56432172216 is 61227123465.

It is a super-2 number, since 2×56432172216² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 23992095 + ... + 23994446.

Almost surely, 2^56432172216 is an apocalyptic number.

56432172216 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

56432172216 is an abundant number, since it is smaller than the sum of its proper divisors (107681801424).

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

56432172216 is a wasteful number, since it uses less digits than its factorization.

56432172216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47986564 (or 47986553 counting only the distinct ones).

The product of its digits is 120960, while the sum is 39.

The spelling of 56432172216 in words is "fifty-six billion, four hundred thirty-two million, one hundred seventy-two thousand, two hundred sixteen".