18097920000 has 360 divisors, whose sum is σ = 65358313020. Its totient is φ = 4823040000.

The previous prime is 18097919981. The next prime is 18097920011. The reversal of 18097920000 is 2979081.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (360).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 11519215 + ... + 11520785.

Almost surely, 2^18097920000 is an apocalyptic number.

18097920000 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 18097920000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32679156510).

18097920000 is an abundant number, since it is smaller than the sum of its proper divisors (47260393020).

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

18097920000 is an equidigital number, since it uses as much as digits as its factorization.

18097920000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1619 (or 1581 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 36.

The spelling of 18097920000 in words is "eighteen billion, ninety-seven million, nine hundred twenty thousand".