51566610665051 has 16 divisors (see below), whose sum is σ = 52331612382720. Its totient is φ = 50807637620640.

The previous prime is 51566610664939. The next prime is 51566610665131. The reversal of 51566610665051 is 15056601666515.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51566610665051 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51566610664984 and 51566610665002.

It is not an unprimeable number, because it can be changed into a prime (51566610665651) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13779956 + ... + 17117838.

It is an arithmetic number, because the mean of its divisors is an integer number (3270725773920).

Almost surely, 2^{51566610665051} is an apocalyptic number.

51566610665051 is a deficient number, since it is larger than the sum of its proper divisors (765001717669).

51566610665051 is a wasteful number, since it uses less digits than its factorization.

51566610665051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3338786.

The product of its (nonzero) digits is 4860000, while the sum is 53.

The spelling of 51566610665051 in words is "fifty-one trillion, five hundred sixty-six billion, six hundred ten million, six hundred sixty-five thousand, fifty-one".