18423365608368 has 1200 divisors, whose sum is σ = 66358445287680. Its totient is φ = 4936906630656.

The previous prime is 18423365608357. The next prime is 18423365608423. The reversal of 18423365608368 is 86380656332481.

18423365608368 is a `hidden beast` number, since 1 + 8 + 4 + 2 + 3 + 3 + 6 + 560 + 8 + 3 + 68 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 239 ways as a sum of consecutive naturals, for example, 11379471463 + ... + 11379473081.

Almost surely, 2^{18423365608368} is an apocalyptic number.

18423365608368 is a gapful number since it is divisible by the number (18) 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 18423365608368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33179222643840).

18423365608368 is an abundant number, since it is smaller than the sum of its proper divisors (47935079679312).

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

18423365608368 is an equidigital number, since it uses as much as digits as its factorization.

18423365608368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1746 (or 1707 counting only the distinct ones).

The product of its (nonzero) digits is 119439360, while the sum is 63.

The spelling of 18423365608368 in words is "eighteen trillion, four hundred twenty-three billion, three hundred sixty-five million, six hundred eight thousand, three hundred sixty-eight".