51595631828 has 24 divisors (see below), whose sum is σ = 97269226152. Its totient is φ = 23805702144.

The previous prime is 51595631749. The next prime is 51595631921. The reversal of 51595631828 is 82813659515.

It can be written as a sum of positive squares in 4 ways, for example, as 5249292304 + 46346339524 = 72452^2 + 215282^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 51595631828.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4976 + ... + 321272.

It is an arithmetic number, because the mean of its divisors is an integer number (4052884423).

Almost surely, 2^51595631828 is an apocalyptic number.

It is an amenable number.

51595631828 is a deficient number, since it is larger than the sum of its proper divisors (45673594324).

51595631828 is a wasteful number, since it uses less digits than its factorization.

51595631828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319451 (or 319449 counting only the distinct ones).

The product of its digits is 2592000, while the sum is 53.

The spelling of 51595631828 in words is "fifty-one billion, five hundred ninety-five million, six hundred thirty-one thousand, eight hundred twenty-eight".