51576831940 has 24 divisors (see below), whose sum is σ = 108855633600. Its totient is φ = 20527059168.

The previous prime is 51576831937. The next prime is 51576831953. The reversal of 51576831940 is 4913867515.

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 7 ways as a sum of consecutive naturals, for example, 6475522 + ... + 6483481.

It is an arithmetic number, because the mean of its divisors is an integer number (4535651400).

Almost surely, 2^51576831940 is an apocalyptic number.

It is an amenable number.

51576831940 is an abundant number, since it is smaller than the sum of its proper divisors (57278801660).

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

51576831940 is a wasteful number, since it uses less digits than its factorization.

51576831940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12959211 (or 12959209 counting only the distinct ones).

The product of its (nonzero) digits is 907200, while the sum is 49.

The spelling of 51576831940 in words is "fifty-one billion, five hundred seventy-six million, eight hundred thirty-one thousand, nine hundred forty".