50556666165 has 16 divisors (see below), whose sum is σ = 80895500928. Its totient is φ = 26961943616.

The previous prime is 50556666143. The next prime is 50556666221. The reversal of 50556666165 is 56166665505.

It is a cyclic number.

It is not a de Polignac number, because 50556666165 - 2¹⁸ = 50556404021 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 184672 + ... + 367718.

It is an arithmetic number, because the mean of its divisors is an integer number (5055968808).

Almost surely, 2^50556666165 is an apocalyptic number.

It is an amenable number.

50556666165 is a deficient number, since it is larger than the sum of its proper divisors (30338834763).

50556666165 is a wasteful number, since it uses less digits than its factorization.

50556666165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201468.

The product of its (nonzero) digits is 4860000, while the sum is 51.

The spelling of 50556666165 in words is "fifty billion, five hundred fifty-six million, six hundred sixty-six thousand, one hundred sixty-five".