166468136680 has 32 divisors (see below), whose sum is σ = 374653024200. Its totient is φ = 66569527296.

The previous prime is 166468136677. The next prime is 166468136693. The reversal of 166468136680 is 86631864661.

It can be written as a sum of positive squares in 4 ways, for example, as 120257755524 + 46210381156 = 346782^2 + 214966^2 .

It is a super-2 number, since 2×166468136680² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (55) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 401337 + ... + 702856.

Almost surely, 2^166468136680 is an apocalyptic number.

166468136680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

166468136680 is an abundant number, since it is smaller than the sum of its proper divisors (208184887520).

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

166468136680 is a wasteful number, since it uses less digits than its factorization.

166468136680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1107973 (or 1107969 counting only the distinct ones).

The product of its (nonzero) digits is 5971968, while the sum is 55.

The spelling of 166468136680 in words is "one hundred sixty-six billion, four hundred sixty-eight million, one hundred thirty-six thousand, six hundred eighty".