166845026979 has 12 divisors (see below), whose sum is σ = 242209422000. Its totient is φ = 110671071984.

The previous prime is 166845026969. The next prime is 166845026983. The reversal of 166845026979 is 979620548661.

166845026979 is a `hidden beast` number, since 1 + 6 + 68 + 4 + 502 + 69 + 7 + 9 = 666.

166845026979 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 166845026979 - 2⁷ = 166845026851 is a prime.

It is not an unprimeable number, because it can be changed into a prime (166845026969) 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, 46576944 + ... + 46580525.

It is an arithmetic number, because the mean of its divisors is an integer number (20184118500).

Almost surely, 2^166845026979 is an apocalyptic number.

166845026979 is a deficient number, since it is larger than the sum of its proper divisors (75364395021).

166845026979 is a wasteful number, since it uses less digits than its factorization.

166845026979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93157674 (or 93157671 counting only the distinct ones).

The product of its (nonzero) digits is 39191040, while the sum is 63.

The spelling of 166845026979 in words is "one hundred sixty-six billion, eight hundred forty-five million, twenty-six thousand, nine hundred seventy-nine".