18304320798720 has 1584 divisors, whose sum is σ = 73557132862752. Its totient is φ = 4334215495680.

The previous prime is 18304320798679. The next prime is 18304320798737. The reversal of 18304320798720 is 2789702340381.

18304320798720 is a `hidden beast` number, since 1 + 8 + 304 + 320 + 7 + 9 + 8 + 7 + 2 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (1584).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 87 ways as a sum of consecutive naturals, for example, 425681879019 + ... + 425681879061.

It is an arithmetic number, because the mean of its divisors is an integer number (46437583878).

Almost surely, 2^{18304320798720} is an apocalyptic number.

18304320798720 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 18304320798720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36778566431376).

18304320798720 is an abundant number, since it is smaller than the sum of its proper divisors (55252812064032).

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

18304320798720 is an frugal number, since it uses more digits than its factorization.

18304320798720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123 (or 64 counting only the distinct ones).

The product of its (nonzero) digits is 4064256, while the sum is 54.

The spelling of 18304320798720 in words is "eighteen trillion, three hundred four billion, three hundred twenty million, seven hundred ninety-eight thousand, seven hundred twenty".