51212964804 has 24 divisors (see below), whose sum is σ = 119742305088. Its totient is φ = 17035932960.

The previous prime is 51212964793. The next prime is 51212964821. The reversal of 51212964804 is 40846921215.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4375827 + ... + 4387514.

It is an arithmetic number, because the mean of its divisors is an integer number (4989262712).

Almost surely, 2^51212964804 is an apocalyptic number.

It is an amenable number.

51212964804 is an abundant number, since it is smaller than the sum of its proper divisors (68529340284).

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

51212964804 is a wasteful number, since it uses less digits than its factorization.

51212964804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8763835 (or 8763833 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 42.

The spelling of 51212964804 in words is "fifty-one billion, two hundred twelve million, nine hundred sixty-four thousand, eight hundred four".