51004554564 has 24 divisors (see below), whose sum is σ = 119431167520. Its totient is φ = 16941441024.

The previous prime is 51004554563. The next prime is 51004554593. The reversal of 51004554564 is 46545540015.

51004554564 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (51004554563) 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, 7506109 + ... + 7512900.

Almost surely, 2^51004554564 is an apocalyptic number.

It is an amenable number.

51004554564 is an abundant number, since it is smaller than the sum of its proper divisors (68426612956).

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

51004554564 is a wasteful number, since it uses less digits than its factorization.

51004554564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15019299 (or 15019297 counting only the distinct ones).

The product of its (nonzero) digits is 240000, while the sum is 39.

The spelling of 51004554564 in words is "fifty-one billion, four million, five hundred fifty-four thousand, five hundred sixty-four".