51179199264 has 72 divisors (see below), whose sum is σ = 145690615980. Its totient is φ = 17042178048.

The previous prime is 51179199263. The next prime is 51179199289. The reversal of 51179199264 is 46299197115.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 50598003600 + 581195664 = 224940^2 + 24108^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is a self number, because there is not a number n which added to its sum of digits gives 51179199264.

It is not an unprimeable number, because it can be changed into a prime (51179199263) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 190432 + ... + 372320.

Almost surely, 2^51179199264 is an apocalyptic number.

It is an amenable number.

51179199264 is an abundant number, since it is smaller than the sum of its proper divisors (94511416716).

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

51179199264 is a wasteful number, since it uses less digits than its factorization.

51179199264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182882 (or 182871 counting only the distinct ones).

The product of its digits is 1224720, while the sum is 54.

The spelling of 51179199264 in words is "fifty-one billion, one hundred seventy-nine million, one hundred ninety-nine thousand, two hundred sixty-four".