51566011016 has 64 divisors (see below), whose sum is σ = 104956553520. Its totient is φ = 23610101760.

The previous prime is 51566010983. The next prime is 51566011051. The reversal of 51566011016 is 61011066515.

It can be written as a sum of positive squares in 8 ways, for example, as 31171314916 + 20394696100 = 176554^2 + 142810^2 .

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, 6805406 + ... + 6812978.

Almost surely, 2^51566011016 is an apocalyptic number.

It is an amenable number.

51566011016 is an abundant number, since it is smaller than the sum of its proper divisors (53390542504).

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

51566011016 is a wasteful number, since it uses less digits than its factorization.

51566011016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8106 (or 8102 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 32.

The spelling of 51566011016 in words is "fifty-one billion, five hundred sixty-six million, eleven thousand, sixteen".