166210710217072 has 80 divisors (see below), whose sum is σ = 347283787727520. Its totient is φ = 76803688857600.

The previous prime is 166210710217061. The next prime is 166210710217087. The reversal of 166210710217072 is 270712017012661.

166210710217072 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 129397822 + ... + 130676002.

It is an arithmetic number, because the mean of its divisors is an integer number (4341047346594).

Almost surely, 2^{166210710217072} 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 166210710217072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (173641893863760).

166210710217072 is an abundant number, since it is smaller than the sum of its proper divisors (181073077510448).

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

166210710217072 is a wasteful number, since it uses less digits than its factorization.

166210710217072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1288682 (or 1288676 counting only the distinct ones).

The product of its (nonzero) digits is 98784, while the sum is 43.

The spelling of 166210710217072 in words is "one hundred sixty-six trillion, two hundred ten billion, seven hundred ten million, two hundred seventeen thousand, seventy-two".