51171925020 has 24 divisors (see below), whose sum is σ = 143281390224. Its totient is φ = 13645846656.

The previous prime is 51171925003. The next prime is 51171925039. The reversal of 51171925020 is 2052917115.

51171925020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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, 426432649 + ... + 426432768.

It is an arithmetic number, because the mean of its divisors is an integer number (5970057926).

Almost surely, 2^51171925020 is an apocalyptic number.

It is an amenable number.

51171925020 is an abundant number, since it is smaller than the sum of its proper divisors (92109465204).

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

51171925020 is a wasteful number, since it uses less digits than its factorization.

51171925020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 852865429 (or 852865427 counting only the distinct ones).

The product of its (nonzero) digits is 6300, while the sum is 33.

The spelling of 51171925020 in words is "fifty-one billion, one hundred seventy-one million, nine hundred twenty-five thousand, twenty".