51836703872 has 16 divisors (see below), whose sum is σ = 103268433750. Its totient is φ = 25918351872.

The previous prime is 51836703869. The next prime is 51836703899. The reversal of 51836703872 is 27830763815.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 31153662016 + 20683041856 = 176504^2 + 143816^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is a self number, because there is not a number n which added to its sum of digits gives 51836703872.

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 as a sum of consecutive naturals, namely, 202486997 + ... + 202487252.

Almost surely, 2^51836703872 is an apocalyptic number.

It is an amenable number.

51836703872 is a deficient number, since it is larger than the sum of its proper divisors (51431729878).

51836703872 is an equidigital number, since it uses as much as digits as its factorization.

51836703872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404974263 (or 404974251 counting only the distinct ones).

The product of its (nonzero) digits is 1693440, while the sum is 50.

The spelling of 51836703872 in words is "fifty-one billion, eight hundred thirty-six million, seven hundred three thousand, eight hundred seventy-two".