166872066183 has 12 divisors (see below), whose sum is σ = 243248782920. Its totient is φ = 110227419216.

The previous prime is 166872066169. The next prime is 166872066209. The reversal of 166872066183 is 381660278661.

166872066183 is a `hidden beast` number, since 16 + 6 + 8 + 7 + 2 + 0 + 6 + 618 + 3 = 666.

166872066183 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 166872066183 - 2⁴ = 166872066167 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166872066103) 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 11 ways as a sum of consecutive naturals, for example, 85051041 + ... + 85053002.

It is an arithmetic number, because the mean of its divisors is an integer number (20270731910).

Almost surely, 2^166872066183 is an apocalyptic number.

166872066183 is a deficient number, since it is larger than the sum of its proper divisors (76376716737).

166872066183 is a wasteful number, since it uses less digits than its factorization.

166872066183 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170104158 (or 170104155 counting only the distinct ones).

The product of its (nonzero) digits is 3483648, while the sum is 54.

The spelling of 166872066183 in words is "one hundred sixty-six billion, eight hundred seventy-two million, sixty-six thousand, one hundred eighty-three".