51164004388 has 24 divisors (see below), whose sum is σ = 102555936000. Its totient is φ = 21878588928.

The previous prime is 51164004383. The next prime is 51164004391. The reversal of 51164004388 is 88340046115.

It is a self number, because there is not a number n which added to its sum of digits gives 51164004388.

It is not an unprimeable number, because it can be changed into a prime (51164004383) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2022268 + ... + 2047411.

It is an arithmetic number, because the mean of its divisors is an integer number (4273164000).

Almost surely, 2^51164004388 is an apocalyptic number.

It is an amenable number.

51164004388 is an abundant number, since it is smaller than the sum of its proper divisors (51391931612).

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

51164004388 is a wasteful number, since it uses less digits than its factorization.

51164004388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4070139 (or 4070137 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 40.

The spelling of 51164004388 in words is "fifty-one billion, one hundred sixty-four million, four thousand, three hundred eighty-eight".