166688904752 has 10 divisors (see below), whose sum is σ = 322959752988. Its totient is φ = 83344452368.

The previous prime is 166688904691. The next prime is 166688904757. The reversal of 166688904752 is 257409886661.

It is not an unprimeable number, because it can be changed into a prime (166688904757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5209028258 + ... + 5209028289.

Almost surely, 2^166688904752 is an apocalyptic number.

It is an amenable number.

166688904752 is a deficient number, since it is larger than the sum of its proper divisors (156270848236).

166688904752 is a wasteful number, since it uses less digits than its factorization.

166688904752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10418056555 (or 10418056549 counting only the distinct ones).

The product of its (nonzero) digits is 34836480, while the sum is 62.

The spelling of 166688904752 in words is "one hundred sixty-six billion, six hundred eighty-eight million, nine hundred four thousand, seven hundred fifty-two".