166682128056 has 32 divisors (see below), whose sum is σ = 416961536640. Its totient is φ = 55526547168.

The previous prime is 166682128043. The next prime is 166682128061. The reversal of 166682128056 is 650821286661.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2095276 + ... + 2173371.

It is an arithmetic number, because the mean of its divisors is an integer number (13030048020).

Almost surely, 2^166682128056 is an apocalyptic number.

It is an amenable number.

166682128056 is an abundant number, since it is smaller than the sum of its proper divisors (250279408584).

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

166682128056 is a wasteful number, since it uses less digits than its factorization.

166682128056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4270283 (or 4270279 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 51.

The spelling of 166682128056 in words is "one hundred sixty-six billion, six hundred eighty-two million, one hundred twenty-eight thousand, fifty-six".