18398830656320 has 112 divisors (see below), whose sum is σ = 44295013304640. Its totient is φ = 7278539096064.

The previous prime is 18398830656289. The next prime is 18398830656331. The reversal of 18398830656320 is 2365603889381.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44086391 + ... + 44501769.

It is an arithmetic number, because the mean of its divisors is an integer number (395491190220).

Almost surely, 2^{18398830656320} is an apocalyptic number.

18398830656320 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 18398830656320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22147506652320).

18398830656320 is an abundant number, since it is smaller than the sum of its proper divisors (25896182648320).

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

18398830656320 is a wasteful number, since it uses less digits than its factorization.

18398830656320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 416920 (or 416910 counting only the distinct ones).

The product of its (nonzero) digits is 44789760, while the sum is 62.

The spelling of 18398830656320 in words is "eighteen trillion, three hundred ninety-eight billion, eight hundred thirty million, six hundred fifty-six thousand, three hundred twenty".