18247372800 has 156 divisors (see below), whose sum is σ = 60331629600. Its totient is φ = 4865884160.

The previous prime is 18247372783. The next prime is 18247372813. The reversal of 18247372800 is 827374281.

It is a super-2 number, since 2×18247372800² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 277501 + ... + 336899.

Almost surely, 2^18247372800 is an apocalyptic number.

18247372800 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 18247372800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30165814800).

18247372800 is an abundant number, since it is smaller than the sum of its proper divisors (42084256800).

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

18247372800 is an equidigital number, since it uses as much as digits as its factorization.

18247372800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59436 (or 59409 counting only the distinct ones).

The product of its (nonzero) digits is 150528, while the sum is 42.

The spelling of 18247372800 in words is "eighteen billion, two hundred forty-seven million, three hundred seventy-two thousand, eight hundred".