166660181033472 has 320 divisors, whose sum is σ = 563859634483200. Its totient is φ = 47612226539520.

The previous prime is 166660181033461. The next prime is 166660181033491. The reversal of 166660181033472 is 274330181066661.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 982981347 + ... + 983150877.

It is an arithmetic number, because the mean of its divisors is an integer number (1762061357760).

Almost surely, 2^{166660181033472} is an apocalyptic number.

166660181033472 is a gapful number since it is divisible by the number (12) 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 166660181033472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (281929817241600).

166660181033472 is an abundant number, since it is smaller than the sum of its proper divisors (397199453449728).

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

166660181033472 is a wasteful number, since it uses less digits than its factorization.

166660181033472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179724 (or 179702 counting only the distinct ones).

The product of its (nonzero) digits is 5225472, while the sum is 54.

The spelling of 166660181033472 in words is "one hundred sixty-six trillion, six hundred sixty billion, one hundred eighty-one million, thirty-three thousand, four hundred seventy-two".