166666668522 has 32 divisors (see below), whose sum is σ = 333893931840. Its totient is φ = 55462176000.

The previous prime is 166666668479. The next prime is 166666668523. The reversal of 166666668522 is 225866666661.

It is not an unprimeable number, because it can be changed into a prime (166666668523) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24388018 + ... + 24394850.

It is an arithmetic number, because the mean of its divisors is an integer number (10434185370).

Almost surely, 2^166666668522 is an apocalyptic number.

166666668522 is an abundant number, since it is smaller than the sum of its proper divisors (167227263318).

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

166666668522 is a wasteful number, since it uses less digits than its factorization.

166666668522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13078.

The product of its digits is 44789760, while the sum is 60.

The spelling of 166666668522 in words is "one hundred sixty-six billion, six hundred sixty-six million, six hundred sixty-eight thousand, five hundred twenty-two".