51583804764 has 48 divisors (see below), whose sum is σ = 121200468480. Its totient is φ = 17075266240.

The previous prime is 51583804759. The next prime is 51583804787. The reversal of 51583804764 is 46740838515.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 978217 + ... + 1029599.

It is an arithmetic number, because the mean of its divisors is an integer number (2525009760).

Almost surely, 2^51583804764 is an apocalyptic number.

It is an amenable number.

51583804764 is an abundant number, since it is smaller than the sum of its proper divisors (69616663716).

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

51583804764 is a wasteful number, since it uses less digits than its factorization.

51583804764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51970 (or 51968 counting only the distinct ones).

The product of its (nonzero) digits is 3225600, while the sum is 51.

The spelling of 51583804764 in words is "fifty-one billion, five hundred eighty-three million, eight hundred four thousand, seven hundred sixty-four".