18056444313600 has 4896 divisors, whose sum is σ = 90870077276160. Its totient is φ = 3439853568000.

The previous prime is 18056444313599. The next prime is 18056444313613. The reversal of 18056444313600 is 631344465081.

18056444313600 is a `hidden beast` number, since 1 + 8 + 0 + 5 + 6 + 4 + 4 + 4 + 31 + 3 + 600 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 582465945585 + ... + 582465945615.

Almost surely, 2^{18056444313600} is an apocalyptic number.

18056444313600 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 18056444313600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45435038638080).

18056444313600 is an abundant number, since it is smaller than the sum of its proper divisors (72813632962560).

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

18056444313600 is an equidigital number, since it uses as much as digits as its factorization.

18056444313600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125 (or 78 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 45.

Adding to 18056444313600 its reverse (631344465081), we get a palindrome (18687788778681).

The spelling of 18056444313600 in words is "eighteen trillion, fifty-six billion, four hundred forty-four million, three hundred thirteen thousand, six hundred".