166622625930816 has 840 divisors, whose sum is σ = 566988226846272. Its totient is φ = 48255670425600.

The previous prime is 166622625930743. The next prime is 166622625930823. The reversal of 166622625930816 is 618039526226661.

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 119 ways as a sum of consecutive naturals, for example, 19923782251 + ... + 19923790613.

Almost surely, 2^{166622625930816} is an apocalyptic number.

166622625930816 is a gapful number since it is divisible by the number (16) 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 166622625930816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (283494113423136).

166622625930816 is an abundant number, since it is smaller than the sum of its proper divisors (400365600915456).

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

166622625930816 is a wasteful number, since it uses less digits than its factorization.

166622625930816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9813 (or 9783 counting only the distinct ones).

The product of its (nonzero) digits is 67184640, while the sum is 63.

The spelling of 166622625930816 in words is "one hundred sixty-six trillion, six hundred twenty-two billion, six hundred twenty-five million, nine hundred thirty thousand, eight hundred sixteen".