51739675216 has 40 divisors (see below), whose sum is σ = 101298844584. Its totient is φ = 25598791680.

The previous prime is 51739675133. The next prime is 51739675279. The reversal of 51739675216 is 61257693715.

It can be written as a sum of positive squares in 4 ways, for example, as 1303498816 + 50436176400 = 36104^2 + 224580^2 .

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, 1092346 + ... + 1138726.

Almost surely, 2^51739675216 is an apocalyptic number.

It is an amenable number.

51739675216 is a deficient number, since it is larger than the sum of its proper divisors (49559169368).

51739675216 is a wasteful number, since it uses less digits than its factorization.

51739675216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47119 (or 47113 counting only the distinct ones).

The product of its digits is 2381400, while the sum is 52.

The spelling of 51739675216 in words is "fifty-one billion, seven hundred thirty-nine million, six hundred seventy-five thousand, two hundred sixteen".