18432799680 has 224 divisors, whose sum is σ = 61351411968. Its totient is φ = 4683571200.

The previous prime is 18432799657. The next prime is 18432799709. The reversal of 18432799680 is 8699723481.

It is a self number, because there is not a number n which added to its sum of digits gives 18432799680.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1687035 + ... + 1697925.

It is an arithmetic number, because the mean of its divisors is an integer number (273890232).

Almost surely, 2^18432799680 is an apocalyptic number.

18432799680 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 18432799680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30675705984).

18432799680 is an abundant number, since it is smaller than the sum of its proper divisors (42918612288).

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

18432799680 is a wasteful number, since it uses less digits than its factorization.

18432799680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10995 (or 10985 counting only the distinct ones).

The product of its (nonzero) digits is 5225472, while the sum is 57.

The spelling of 18432799680 in words is "eighteen billion, four hundred thirty-two million, seven hundred ninety-nine thousand, six hundred eighty".