51729925128 has 64 divisors (see below), whose sum is σ = 150304896000. Its totient is φ = 14529467712.

The previous prime is 51729925097. The next prime is 51729925147. The reversal of 51729925128 is 82152992715.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2599548 + ... + 2619371.

It is an arithmetic number, because the mean of its divisors is an integer number (2348514000).

Almost surely, 2^51729925128 is an apocalyptic number.

It is an amenable number.

51729925128 is an abundant number, since it is smaller than the sum of its proper divisors (98574970872).

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

51729925128 is a wasteful number, since it uses less digits than its factorization.

51729925128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5218994 (or 5218990 counting only the distinct ones).

The product of its digits is 907200, while the sum is 51.

The spelling of 51729925128 in words is "fifty-one billion, seven hundred twenty-nine million, nine hundred twenty-five thousand, one hundred twenty-eight".