668872908180 has 72 divisors (see below), whose sum is σ = 2034212124672. Its totient is φ = 177900382656.

The previous prime is 668872908169. The next prime is 668872908307. The reversal of 668872908180 is 81809278866.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4782184 + ... + 4920063.

It is an arithmetic number, because the mean of its divisors is an integer number (28252946176).

Almost surely, 2^668872908180 is an apocalyptic number.

668872908180 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

668872908180 is an abundant number, since it is smaller than the sum of its proper divisors (1365339216492).

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

668872908180 is a wasteful number, since it uses less digits than its factorization.

668872908180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9702645 (or 9702640 counting only the distinct ones).

The product of its (nonzero) digits is 18579456, while the sum is 63.

The spelling of 668872908180 in words is "six hundred sixty-eight billion, eight hundred seventy-two million, nine hundred eight thousand, one hundred eighty".