166668869580 has 48 divisors (see below), whose sum is σ = 478055106144. Its totient is φ = 43361006080.

The previous prime is 166668869551. The next prime is 166668869599. The reversal of 166668869580 is 85968866661.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33873327 + ... + 33878246.

It is an arithmetic number, because the mean of its divisors is an integer number (9959481378).

Almost surely, 2^166668869580 is an apocalyptic number.

166668869580 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

166668869580 is an abundant number, since it is smaller than the sum of its proper divisors (311386236564).

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

166668869580 is a wasteful number, since it uses less digits than its factorization.

166668869580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67751626 (or 67751624 counting only the distinct ones).

The product of its (nonzero) digits is 179159040, while the sum is 69.

The spelling of 166668869580 in words is "one hundred sixty-six billion, six hundred sixty-eight million, eight hundred sixty-nine thousand, five hundred eighty".