16666500165 has 16 divisors (see below), whose sum is σ = 30475886208. Its totient is φ = 7618971456.

The previous prime is 16666500157. The next prime is 16666500197. The reversal of 16666500165 is 56100566661.

16666500165 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 16666500165 - 2³ = 16666500157 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, 79364182 + ... + 79364391.

It is an arithmetic number, because the mean of its divisors is an integer number (1904742888).

Almost surely, 2^16666500165 is an apocalyptic number.

16666500165 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16666500165 is a deficient number, since it is larger than the sum of its proper divisors (13809386043).

16666500165 is a wasteful number, since it uses less digits than its factorization.

16666500165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158728588.

The product of its (nonzero) digits is 194400, while the sum is 42.

The spelling of 16666500165 in words is "sixteen billion, six hundred sixty-six million, five hundred thousand, one hundred sixty-five".