166171043304 has 192 divisors, whose sum is σ = 540800208000. Its totient is φ = 45088565760.

The previous prime is 166171043293. The next prime is 166171043309. The reversal of 166171043304 is 403340171661.

166171043304 is a `hidden beast` number, since 1 + 6 + 617 + 1 + 0 + 4 + 3 + 30 + 4 = 666.

It is a super-2 number, since 2×166171043304² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (166171043309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 798387 + ... + 984765.

It is an arithmetic number, because the mean of its divisors is an integer number (2816667750).

Almost surely, 2^166171043304 is an apocalyptic number.

166171043304 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 166171043304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (270400104000).

166171043304 is an abundant number, since it is smaller than the sum of its proper divisors (374629164696).

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

166171043304 is a wasteful number, since it uses less digits than its factorization.

166171043304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186488 (or 186481 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The spelling of 166171043304 in words is "one hundred sixty-six billion, one hundred seventy-one million, forty-three thousand, three hundred four".