166664657268 has 48 divisors (see below), whose sum is σ = 432164864320. Its totient is φ = 55545717600.

The previous prime is 166664657267. The next prime is 166664657323. The reversal of 166664657268 is 862756466661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166664657267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 546558 + ... + 795018.

Almost surely, 2^166664657268 is an apocalyptic number.

166664657268 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

166664657268 is an abundant number, since it is smaller than the sum of its proper divisors (265500207052).

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

166664657268 is a wasteful number, since it uses less digits than its factorization.

166664657268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254685 (or 254677 counting only the distinct ones).

The product of its digits is 104509440, while the sum is 63.

The spelling of 166664657268 in words is "one hundred sixty-six billion, six hundred sixty-four million, six hundred fifty-seven thousand, two hundred sixty-eight".