18111543468480 has 2240 divisors, whose sum is σ = 85137645035520. Its totient is φ = 3540630528000.

The previous prime is 18111543468463. The next prime is 18111543468493. The reversal of 18111543468480 is 8486434511181.

18111543468480 is a `hidden beast` number, since 1 + 8 + 1 + 1 + 154 + 3 + 4 + 6 + 8 + 480 = 666.

It is a tau number, because it is divible by the number of its divisors (2240).

It is a Harshad number since it is a multiple of its sum of digits (54).

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 319 ways as a sum of consecutive naturals, for example, 5726063379 + ... + 5726066541.

It is an arithmetic number, because the mean of its divisors is an integer number (38007877248).

Almost surely, 2^{18111543468480} is an apocalyptic number.

18111543468480 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 18111543468480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42568822517760).

18111543468480 is an abundant number, since it is smaller than the sum of its proper divisors (67026101567040).

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

18111543468480 is a wasteful number, since it uses less digits than its factorization.

18111543468480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3380 (or 3361 counting only the distinct ones).

The product of its (nonzero) digits is 2949120, while the sum is 54.

The spelling of 18111543468480 in words is "eighteen trillion, one hundred eleven billion, five hundred forty-three million, four hundred sixty-eight thousand, four hundred eighty".