166485733879 has 16 divisors (see below), whose sum is σ = 175134643200. Its totient is φ = 158099810400.

The previous prime is 166485733877. The next prime is 166485733891. The reversal of 166485733879 is 978337584661.

It is a cyclic number.

It is not a de Polignac number, because 166485733879 - 2¹ = 166485733877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166485733877) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32397 + ... + 577945.

It is an arithmetic number, because the mean of its divisors is an integer number (10945915200).

Almost surely, 2^166485733879 is an apocalyptic number.

166485733879 is a deficient number, since it is larger than the sum of its proper divisors (8648909321).

166485733879 is a wasteful number, since it uses less digits than its factorization.

166485733879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 545790.

The product of its digits is 182891520, while the sum is 67.

The spelling of 166485733879 in words is "one hundred sixty-six billion, four hundred eighty-five million, seven hundred thirty-three thousand, eight hundred seventy-nine".