166978192080 has 160 divisors (see below), whose sum is σ = 592237522944. Its totient is φ = 38124016128.

The previous prime is 166978192037. The next prime is 166978192093. The reversal of 166978192080 is 80291879661.

It is a self number, because there is not a number n which added to its sum of digits gives 166978192080.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1468969 + ... + 1578551.

Almost surely, 2^166978192080 is an apocalyptic number.

166978192080 is a gapful number since it is divisible by the number (10) 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 166978192080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (296118761472).

166978192080 is an abundant number, since it is smaller than the sum of its proper divisors (425259330864).

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

166978192080 is a wasteful number, since it uses less digits than its factorization.

166978192080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110513 (or 110507 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 57.

The spelling of 166978192080 in words is "one hundred sixty-six billion, nine hundred seventy-eight million, one hundred ninety-two thousand, eighty".