166666500111 has 16 divisors (see below), whose sum is σ = 228248910944. Its totient is φ = 108098095104.

The previous prime is 166666500079. The next prime is 166666500131. The reversal of 166666500111 is 111005666661.

166666500111 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 166666500111 - 2⁵ = 166666500079 is a prime.

It is a super-3 number, since 3×166666500111³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 166666500111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166666500131) 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 15 ways as a sum of consecutive naturals, for example, 1263975 + ... + 1389591.

It is an arithmetic number, because the mean of its divisors is an integer number (14265556934).

Almost surely, 2^166666500111 is an apocalyptic number.

166666500111 is a deficient number, since it is larger than the sum of its proper divisors (61582410833).

166666500111 is a wasteful number, since it uses less digits than its factorization.

166666500111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137610.

The product of its (nonzero) digits is 38880, while the sum is 39.

The spelling of 166666500111 in words is "one hundred sixty-six billion, six hundred sixty-six million, five hundred thousand, one hundred eleven".