166726880432 has 40 divisors (see below), whose sum is σ = 369410228256. Its totient is φ = 71410000896.

The previous prime is 166726880387. The next prime is 166726880491. The reversal of 166726880432 is 234088627661.

It is a happy number.

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 7 ways as a sum of consecutive naturals, for example, 280793 + ... + 642104.

Almost surely, 2^166726880432 is an apocalyptic number.

It is an amenable number.

166726880432 is an abundant number, since it is smaller than the sum of its proper divisors (202683347824).

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

166726880432 is a wasteful number, since it uses less digits than its factorization.

166726880432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 924525 (or 924519 counting only the distinct ones).

The product of its (nonzero) digits is 4644864, while the sum is 53.

The spelling of 166726880432 in words is "one hundred sixty-six billion, seven hundred twenty-six million, eight hundred eighty thousand, four hundred thirty-two".