51831836772 has 24 divisors (see below), whose sum is σ = 122990800800. Its totient is φ = 16984443456.

The previous prime is 51831836767. The next prime is 51831836839. The reversal of 51831836772 is 27763813815.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 36603697 + ... + 36605112.

It is an arithmetic number, because the mean of its divisors is an integer number (5124616700).

Almost surely, 2^51831836772 is an apocalyptic number.

It is an amenable number.

51831836772 is an abundant number, since it is smaller than the sum of its proper divisors (71158964028).

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

51831836772 is a wasteful number, since it uses less digits than its factorization.

51831836772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73208875 (or 73208873 counting only the distinct ones).

The product of its digits is 1693440, while the sum is 51.

The spelling of 51831836772 in words is "fifty-one billion, eight hundred thirty-one million, eight hundred thirty-six thousand, seven hundred seventy-two".