18688452383808 has 392 divisors, whose sum is σ = 56824914706560. Its totient is φ = 6092650275840.

The previous prime is 18688452383743. The next prime is 18688452383891. The reversal of 18688452383808 is 80838325488681.

18688452383808 is a `hidden beast` number, since 1 + 8 + 6 + 8 + 8 + 4 + 5 + 238 + 380 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is an unprimeable number.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 5063247243 + ... + 5063250933.

Almost surely, 2^{18688452383808} is an apocalyptic number.

18688452383808 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 18688452383808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28412457353280).

18688452383808 is an abundant number, since it is smaller than the sum of its proper divisors (38136462322752).

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

18688452383808 is an equidigital number, since it uses as much as digits as its factorization.

18688452383808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6077 (or 6052 counting only the distinct ones).

The product of its (nonzero) digits is 566231040, while the sum is 72.

The spelling of 18688452383808 in words is "eighteen trillion, six hundred eighty-eight billion, four hundred fifty-two million, three hundred eighty-three thousand, eight hundred eight".