51025533804 has 72 divisors (see below), whose sum is σ = 149905566720. Its totient is φ = 14331622752.

The previous prime is 51025533763. The next prime is 51025533841. The reversal of 51025533804 is 40833552015.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1701084 + ... + 1730819.

It is an arithmetic number, because the mean of its divisors is an integer number (2082021760).

Almost surely, 2^51025533804 is an apocalyptic number.

It is an amenable number.

51025533804 is an abundant number, since it is smaller than the sum of its proper divisors (98880032916).

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

51025533804 is a wasteful number, since it uses less digits than its factorization.

51025533804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3431979 (or 3431974 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

The spelling of 51025533804 in words is "fifty-one billion, twenty-five million, five hundred thirty-three thousand, eight hundred four".