166316396180 has 48 divisors (see below), whose sum is σ = 397581657984. Its totient is φ = 57849179520.

The previous prime is 166316396167. The next prime is 166316396189. The reversal of 166316396180 is 81693613661.

It is a happy number.

It is a super-2 number, since 2×166316396180² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166316396189) 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, 16429367 + ... + 16439486.

It is an arithmetic number, because the mean of its divisors is an integer number (8282951208).

Almost surely, 2^166316396180 is an apocalyptic number.

166316396180 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

166316396180 is an abundant number, since it is smaller than the sum of its proper divisors (231265261804).

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

166316396180 is a wasteful number, since it uses less digits than its factorization.

166316396180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32868896 (or 32868894 counting only the distinct ones).

The product of its (nonzero) digits is 839808, while the sum is 50.

The spelling of 166316396180 in words is "one hundred sixty-six billion, three hundred sixteen million, three hundred ninety-six thousand, one hundred eighty".