166918176928 has 12 divisors (see below), whose sum is σ = 328620160890. Its totient is φ = 83459088448.

The previous prime is 166918176883. The next prime is 166918176941. The reversal of 166918176928 is 829671819661.

It can be written as a sum of positive squares in only one way, i.e., 111254268304 + 55663908624 = 333548^2 + 235932^2 .

It is a super-2 number, since 2×166918176928² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 166918176928.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2608096483 + ... + 2608096546.

Almost surely, 2^166918176928 is an apocalyptic number.

It is an amenable number.

166918176928 is a deficient number, since it is larger than the sum of its proper divisors (161701983962).

166918176928 is an equidigital number, since it uses as much as digits as its factorization.

166918176928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5216193039 (or 5216193031 counting only the distinct ones).

The product of its digits is 15676416, while the sum is 64.

The spelling of 166918176928 in words is "one hundred sixty-six billion, nine hundred eighteen million, one hundred seventy-six thousand, nine hundred twenty-eight".