166375375212 has 24 divisors (see below), whose sum is σ = 388216082800. Its totient is φ = 55457476416.

The previous prime is 166375375211. The next prime is 166375375213. The reversal of 166375375212 is 212573573661.

It is an interprime number because it is at equal distance from previous prime (166375375211) and next prime (166375375213).

It is not an unprimeable number, because it can be changed into a prime (166375375211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 978114 + ... + 1135542.

Almost surely, 2^166375375212 is an apocalyptic number.

166375375212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

166375375212 is an abundant number, since it is smaller than the sum of its proper divisors (221840707588).

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

166375375212 is a wasteful number, since it uses less digits than its factorization.

166375375212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245505 (or 245503 counting only the distinct ones).

The product of its digits is 1587600, while the sum is 48.

The spelling of 166375375212 in words is "one hundred sixty-six billion, three hundred seventy-five million, three hundred seventy-five thousand, two hundred twelve".