50665511665665 has 48 divisors (see below), whose sum is σ = 96775054888512. Its totient is φ = 24362950856832.

The previous prime is 50665511665651. The next prime is 50665511665667. The reversal of 50665511665665 is 56656611556605.

50665511665665 is a `hidden beast` number, since 5 + 0 + 6 + 6 + 5 + 5 + 1 + 1 + 66 + 566 + 5 = 666.

It is not a de Polignac number, because 50665511665665 - 2³⁵ = 50631151927297 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (50665511665667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1007041267 + ... + 1007091576.

It is an arithmetic number, because the mean of its divisors is an integer number (2016146976844).

Almost surely, 2^{50665511665665} is an apocalyptic number.

It is an amenable number.

50665511665665 is a deficient number, since it is larger than the sum of its proper divisors (46109543222847).

50665511665665 is a wasteful number, since it uses less digits than its factorization.

50665511665665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2014132910 (or 2014132907 counting only the distinct ones).

The product of its (nonzero) digits is 145800000, while the sum is 63.

The spelling of 50665511665665 in words is "fifty trillion, six hundred sixty-five billion, five hundred eleven million, six hundred sixty-five thousand, six hundred sixty-five".