56637431442 has 64 divisors (see below), whose sum is σ = 128296638720. Its totient is φ = 18516556800.

The previous prime is 56637431359. The next prime is 56637431443. The reversal of 56637431442 is 24413473665.

56637431442 is a `hidden beast` number, since 5 + 6 + 637 + 4 + 3 + 1 + 4 + 4 + 2 = 666.

It is not an unprimeable number, because it can be changed into a prime (56637431443) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 701692 + ... + 778232.

It is an arithmetic number, because the mean of its divisors is an integer number (2004634980).

Almost surely, 2^56637431442 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56637431442, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64148319360).

56637431442 is an abundant number, since it is smaller than the sum of its proper divisors (71659207278).

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

56637431442 is a wasteful number, since it uses less digits than its factorization.

56637431442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76816 (or 76810 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 45.

The spelling of 56637431442 in words is "fifty-six billion, six hundred thirty-seven million, four hundred thirty-one thousand, four hundred forty-two".