18081423360 has 1344 divisors, whose sum is σ = 85873132800. Its totient is φ = 3468165120.

The previous prime is 18081423341. The next prime is 18081423361. The reversal of 18081423360 is 6332418081.

18081423360 is a `hidden beast` number, since 180 + 8 + 142 + 336 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (1344).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18081423361) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1390878714 + ... + 1390878726.

It is an arithmetic number, because the mean of its divisors is an integer number (63893700).

Almost surely, 2^18081423360 is an apocalyptic number.

18081423360 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 18081423360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42936566400).

18081423360 is an abundant number, since it is smaller than the sum of its proper divisors (67791709440).

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

18081423360 is a wasteful number, since it uses less digits than its factorization.

18081423360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82 (or 41 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The spelling of 18081423360 in words is "eighteen billion, eighty-one million, four hundred twenty-three thousand, three hundred sixty".