166327985824 has 192 divisors, whose sum is σ = 440050544640. Its totient is φ = 59765713920.

The previous prime is 166327985801. The next prime is 166327985827. The reversal of 166327985824 is 428589723661.

It is not an unprimeable number, because it can be changed into a prime (166327985827) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 69796537 + ... + 69798919.

It is an arithmetic number, because the mean of its divisors is an integer number (2291929920).

Almost surely, 2^166327985824 is an apocalyptic number.

166327985824 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 166327985824, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (220025272320).

166327985824 is an abundant number, since it is smaller than the sum of its proper divisors (273722558816).

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

166327985824 is a wasteful number, since it uses less digits than its factorization.

166327985824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4603 (or 4595 counting only the distinct ones).

The product of its digits is 34836480, while the sum is 61.

The spelling of 166327985824 in words is "one hundred sixty-six billion, three hundred twenty-seven million, nine hundred eighty-five thousand, eight hundred twenty-four".