166684885224 has 576 divisors, whose sum is σ = 530117913600. Its totient is φ = 43279142400.

The previous prime is 166684885201. The next prime is 166684885247. The reversal of 166684885224 is 422588486661.

It is an interprime number because it is at equal distance from previous prime (166684885201) and next prime (166684885247).

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

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 143 ways as a sum of consecutive naturals, for example, 1272403639 + ... + 1272403769.

It is an arithmetic number, because the mean of its divisors is an integer number (920343600).

Almost surely, 2^166684885224 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 166684885224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (265058956800).

166684885224 is an abundant number, since it is smaller than the sum of its proper divisors (363433028376).

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

166684885224 is a wasteful number, since it uses less digits than its factorization.

166684885224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294 (or 258 counting only the distinct ones).

The product of its digits is 35389440, while the sum is 60.

The spelling of 166684885224 in words is "one hundred sixty-six billion, six hundred eighty-four million, eight hundred eighty-five thousand, two hundred twenty-four".