166666685164 has 24 divisors (see below), whose sum is σ = 333352339488. Its totient is φ = 71424514560.

The previous prime is 166666685149. The next prime is 166666685209. The reversal of 166666685164 is 461586666661.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 360534 + ... + 680674.

It is an arithmetic number, because the mean of its divisors is an integer number (13889680812).

Almost surely, 2^166666685164 is an apocalyptic number.

166666685164 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

166666685164 is an abundant number, since it is smaller than the sum of its proper divisors (166685654324).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

166666685164 is a wasteful number, since it uses less digits than its factorization.

166666685164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 338745 (or 338743 counting only the distinct ones).

The product of its digits is 44789760, while the sum is 61.

The spelling of 166666685164 in words is "one hundred sixty-six billion, six hundred sixty-six million, six hundred eighty-five thousand, one hundred sixty-four".