18554411340800 has 132 divisors (see below), whose sum is σ = 46063598749920. Its totient is φ = 7410286878720.

The previous prime is 18554411340797. The next prime is 18554411340809. The reversal of 18554411340800 is 804311445581.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18554411340809) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16003091 + ... + 17123309.

Almost surely, 2^{18554411340800} is an apocalyptic number.

18554411340800 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 18554411340800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23031799374960).

18554411340800 is an abundant number, since it is smaller than the sum of its proper divisors (27509187409120).

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

18554411340800 is a wasteful number, since it uses less digits than its factorization.

18554411340800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1120896 (or 1120873 counting only the distinct ones).

The product of its (nonzero) digits is 307200, while the sum is 44.

The spelling of 18554411340800 in words is "eighteen trillion, five hundred fifty-four billion, four hundred eleven million, three hundred forty thousand, eight hundred".