166585395836 has 12 divisors (see below), whose sum is σ = 292685896440. Its totient is φ = 82960854000.

The previous prime is 166585395829. The next prime is 166585395853. The reversal of 166585395836 is 638593585661.

166585395836 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×166585395836² (a number of 23 digits) contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 82959851 + ... + 82961858.

It is an arithmetic number, because the mean of its divisors is an integer number (24390491370).

Almost surely, 2^166585395836 is an apocalyptic number.

It is an amenable number.

166585395836 is a deficient number, since it is larger than the sum of its proper divisors (126100500604).

166585395836 is a wasteful number, since it uses less digits than its factorization.

166585395836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165921964 (or 165921962 counting only the distinct ones).

The product of its digits is 139968000, while the sum is 65.

The spelling of 166585395836 in words is "one hundred sixty-six billion, five hundred eighty-five million, three hundred ninety-five thousand, eight hundred thirty-six".