18080543488 has 144 divisors (see below), whose sum is σ = 43566960640. Its totient is φ = 7335982080.

The previous prime is 18080543483. The next prime is 18080543513. The reversal of 18080543488 is 88434508081.

It is a super-2 number, since 2×18080543488² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18080543483) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12290593 + ... + 12292063.

Almost surely, 2^18080543488 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18080543488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21783480320).

18080543488 is an abundant number, since it is smaller than the sum of its proper divisors (25486417152).

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

18080543488 is an frugal number, since it uses more digits than its factorization.

18080543488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1551 (or 1499 counting only the distinct ones).

The product of its (nonzero) digits is 983040, while the sum is 49.

The spelling of 18080543488 in words is "eighteen billion, eighty million, five hundred forty-three thousand, four hundred eighty-eight".