166666866700 has 36 divisors (see below), whose sum is σ = 362008204992. Its totient is φ = 66603870400.

The previous prime is 166666866683. The next prime is 166666866727. The reversal of 166666866700 is 7668666661.

166666866700 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 679324 + ... + 891523.

It is an arithmetic number, because the mean of its divisors is an integer number (10055783472).

Almost surely, 2^166666866700 is an apocalyptic number.

166666866700 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

166666866700 is an abundant number, since it is smaller than the sum of its proper divisors (195341338292).

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

166666866700 is a wasteful number, since it uses less digits than its factorization.

166666866700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1571922 (or 1571915 counting only the distinct ones).

The product of its (nonzero) digits is 15676416, while the sum is 58.

The spelling of 166666866700 in words is "one hundred sixty-six billion, six hundred sixty-six million, eight hundred sixty-six thousand, seven hundred".