17980868280 has 64 divisors (see below), whose sum is σ = 54367395840. Its totient is φ = 4757139072.

The previous prime is 17980868267. The next prime is 17980868333. The reversal of 17980868280 is 8286808971.

It is a hoax number, since the sum of its digits (57) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 17980868280.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 574684 + ... + 605163.

It is an arithmetic number, because the mean of its divisors is an integer number (849490560).

Almost surely, 2^17980868280 is an apocalyptic number.

17980868280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

17980868280 is an abundant number, since it is smaller than the sum of its proper divisors (36386527560).

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

17980868280 is a wasteful number, since it uses less digits than its factorization.

17980868280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1179988 (or 1179984 counting only the distinct ones).

The product of its (nonzero) digits is 3096576, while the sum is 57.

The spelling of 17980868280 in words is "seventeen billion, nine hundred eighty million, eight hundred sixty-eight thousand, two hundred eighty".