18378555852384 has 576 divisors, whose sum is σ = 68068853798400. Its totient is φ = 4847082508800.

The previous prime is 18378555852379. The next prime is 18378555852403. The reversal of 18378555852384 is 48325855587381.

18378555852384 is a `hidden beast` number, since 1 + 8 + 3 + 7 + 8 + 5 + 5 + 585 + 2 + 38 + 4 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 34408159 + ... + 34938209.

It is an arithmetic number, because the mean of its divisors is an integer number (118175093400).

Almost surely, 2^{18378555852384} is an apocalyptic number.

18378555852384 is a gapful number since it is divisible by the number (14) 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 18378555852384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34034426899200).

18378555852384 is an abundant number, since it is smaller than the sum of its proper divisors (49690297946016).

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

18378555852384 is an equidigital number, since it uses as much as digits as its factorization.

18378555852384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 530110 (or 530076 counting only the distinct ones).

The product of its digits is 1290240000, while the sum is 72.

The spelling of 18378555852384 in words is "eighteen trillion, three hundred seventy-eight billion, five hundred fifty-five million, eight hundred fifty-two thousand, three hundred eighty-four".