51051045020 has 12 divisors (see below), whose sum is σ = 107207194584. Its totient is φ = 20420418000.

The previous prime is 51051044981. The next prime is 51051045047. The reversal of 51051045020 is 2054015015.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1276276106 + ... + 1276276145.

It is an arithmetic number, because the mean of its divisors is an integer number (8933932882).

Almost surely, 2^51051045020 is an apocalyptic number.

It is an amenable number.

51051045020 is an abundant number, since it is smaller than the sum of its proper divisors (56156149564).

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

51051045020 is a wasteful number, since it uses less digits than its factorization.

51051045020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2552552260 (or 2552552258 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 23.

The spelling of 51051045020 in words is "fifty-one billion, fifty-one million, forty-five thousand, twenty".