17994105880 has 32 divisors (see below), whose sum is σ = 40515804000. Its totient is φ = 7192475136.

The previous prime is 17994105841. The next prime is 17994105887. The reversal of 17994105880 is 8850149971.

It is a Smith number, since the sum of its digits (52) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (17994105887) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104817 + ... + 216736.

It is an arithmetic number, because the mean of its divisors is an integer number (1266118875).

Almost surely, 2^17994105880 is an apocalyptic number.

17994105880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

17994105880 is an abundant number, since it is smaller than the sum of its proper divisors (22521698120).

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

17994105880 is a wasteful number, since it uses less digits than its factorization.

17994105880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322963 (or 322959 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 52.

The spelling of 17994105880 in words is "seventeen billion, nine hundred ninety-four million, one hundred five thousand, eight hundred eighty".