166625851312 has 80 divisors (see below), whose sum is σ = 342311840640. Its totient is φ = 78353547264.

The previous prime is 166625851277. The next prime is 166625851333. The reversal of 166625851312 is 213158526661.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23981823 + ... + 23988769.

It is an arithmetic number, because the mean of its divisors is an integer number (4278898008).

Almost surely, 2^166625851312 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 166625851312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (171155920320).

166625851312 is an abundant number, since it is smaller than the sum of its proper divisors (175685989328).

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

166625851312 is a wasteful number, since it uses less digits than its factorization.

166625851312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7538 (or 7532 counting only the distinct ones).

The product of its digits is 518400, while the sum is 46.

The spelling of 166625851312 in words is "one hundred sixty-six billion, six hundred twenty-five million, eight hundred fifty-one thousand, three hundred twelve".