51789716836 has 96 divisors (see below), whose sum is σ = 108052310016. Its totient is φ = 21409872000.

The previous prime is 51789716813. The next prime is 51789716873. The reversal of 51789716836 is 63861798715.

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 31 ways as a sum of consecutive naturals, for example, 20460891 + ... + 20463421.

It is an arithmetic number, because the mean of its divisors is an integer number (1125544896).

Almost surely, 2^51789716836 is an apocalyptic number.

It is an amenable number.

51789716836 is an abundant number, since it is smaller than the sum of its proper divisors (56262593180).

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

51789716836 is a wasteful number, since it uses less digits than its factorization.

51789716836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3073 (or 3071 counting only the distinct ones).

The product of its digits is 15240960, while the sum is 61.

The spelling of 51789716836 in words is "fifty-one billion, seven hundred eighty-nine million, seven hundred sixteen thousand, eight hundred thirty-six".