166673405504 has 14 divisors (see below), whose sum is σ = 330742539174. Its totient is φ = 83336702720.

The previous prime is 166673405489. The next prime is 166673405567. The reversal of 166673405504 is 405504376661.

It can be written as a sum of positive squares in only one way, i.e., 154386126400 + 12287279104 = 392920^2 + 110848^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1302135917 + ... + 1302136044.

Almost surely, 2^166673405504 is an apocalyptic number.

It is an amenable number.

166673405504 is a deficient number, since it is larger than the sum of its proper divisors (164069133670).

166673405504 is an equidigital number, since it uses as much as digits as its factorization.

166673405504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2604271973 (or 2604271963 counting only the distinct ones).

The product of its (nonzero) digits is 1814400, while the sum is 47.

The spelling of 166673405504 in words is "one hundred sixty-six billion, six hundred seventy-three million, four hundred five thousand, five hundred four".