166789685628 has 48 divisors (see below), whose sum is σ = 432446560000. Its totient is φ = 55592851824.

The previous prime is 166789685593. The next prime is 166789685639. The reversal of 166789685628 is 826586987661.

It is a happy number.

166789685628 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 1923063 + ... + 2007921.

Almost surely, 2^166789685628 is an apocalyptic number.

166789685628 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

166789685628 is an abundant number, since it is smaller than the sum of its proper divisors (265656874372).

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

166789685628 is a wasteful number, since it uses less digits than its factorization.

166789685628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103071 (or 103063 counting only the distinct ones).

The product of its digits is 418037760, while the sum is 72.

The spelling of 166789685628 in words is "one hundred sixty-six billion, seven hundred eighty-nine million, six hundred eighty-five thousand, six hundred twenty-eight".