55815372744 has 16 divisors (see below), whose sum is σ = 139538431920. Its totient is φ = 18605124240.

The previous prime is 55815372713. The next prime is 55815372803. The reversal of 55815372744 is 44727351855.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1162820242 + ... + 1162820289.

It is an arithmetic number, because the mean of its divisors is an integer number (8721151995).

Almost surely, 2^55815372744 is an apocalyptic number.

It is an amenable number.

55815372744 is an abundant number, since it is smaller than the sum of its proper divisors (83723059176).

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

55815372744 is a wasteful number, since it uses less digits than its factorization.

55815372744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2325640540 (or 2325640536 counting only the distinct ones).

The product of its digits is 4704000, while the sum is 51.

The spelling of 55815372744 in words is "fifty-five billion, eight hundred fifteen million, three hundred seventy-two thousand, seven hundred forty-four".