56446157187 has 12 divisors (see below), whose sum is σ = 93180958000. Its totient is φ = 32254946928.

The previous prime is 56446157137. The next prime is 56446157191. The reversal of 56446157187 is 78175164465.

56446157187 is a `hidden beast` number, since 5 + 6 + 4 + 4 + 61 + 571 + 8 + 7 = 666.

It is not a de Polignac number, because 56446157187 - 2⁷ = 56446157059 is a prime.

It is a super-2 number, since 2×56446157187² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56446157137) 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 11 ways as a sum of consecutive naturals, for example, 447985312 + ... + 447985437.

Almost surely, 2^56446157187 is an apocalyptic number.

56446157187 is a deficient number, since it is larger than the sum of its proper divisors (36734800813).

56446157187 is a wasteful number, since it uses less digits than its factorization.

56446157187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 895970762 (or 895970759 counting only the distinct ones).

The product of its digits is 5644800, while the sum is 54.

The spelling of 56446157187 in words is "fifty-six billion, four hundred forty-six million, one hundred fifty-seven thousand, one hundred eighty-seven".