51055051020 has 24 divisors (see below), whose sum is σ = 142954143024. Its totient is φ = 13614680256.

The previous prime is 51055050979. The next prime is 51055051063. The reversal of 51055051020 is 2015055015.

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, 425458699 + ... + 425458818.

It is an arithmetic number, because the mean of its divisors is an integer number (5956422626).

Almost surely, 2^51055051020 is an apocalyptic number.

It is an amenable number.

51055051020 is an abundant number, since it is smaller than the sum of its proper divisors (91899092004).

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

51055051020 is a wasteful number, since it uses less digits than its factorization.

51055051020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 850917529 (or 850917527 counting only the distinct ones).

The product of its (nonzero) digits is 1250, while the sum is 24.

The spelling of 51055051020 in words is "fifty-one billion, fifty-five million, fifty-one thousand, twenty".