166532252246556 has 192 divisors, whose sum is σ = 479590187489280. Its totient is φ = 43944119746560.

The previous prime is 166532252246539. The next prime is 166532252246599. The reversal of 166532252246556 is 655642252235661.

It is a super-2 number, since 2×166532252246556² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 166532252246556.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3153351 + ... + 18520478.

It is an arithmetic number, because the mean of its divisors is an integer number (2497865559840).

Almost surely, 2^{166532252246556} 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 166532252246556, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (239795093744640).

166532252246556 is an abundant number, since it is smaller than the sum of its proper divisors (313057935242724).

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

166532252246556 is a wasteful number, since it uses less digits than its factorization.

166532252246556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21674004 (or 21674002 counting only the distinct ones).

The product of its digits is 155520000, while the sum is 60.

The spelling of 166532252246556 in words is "one hundred sixty-six trillion, five hundred thirty-two billion, two hundred fifty-two million, two hundred forty-six thousand, five hundred fifty-six".