18047733280 has 192 divisors, whose sum is σ = 44547148800. Its totient is φ = 6905733120.

The previous prime is 18047733259. The next prime is 18047733283. The reversal of 18047733280 is 8233774081.

It is not an unprimeable number, because it can be changed into a prime (18047733283) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 68622429 + ... + 68622691.

It is an arithmetic number, because the mean of its divisors is an integer number (232016400).

Almost surely, 2^18047733280 is an apocalyptic number.

18047733280 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 18047733280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22273574400).

18047733280 is an abundant number, since it is smaller than the sum of its proper divisors (26499415520).

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

18047733280 is a wasteful number, since it uses less digits than its factorization.

18047733280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 507 (or 499 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 43.

The spelling of 18047733280 in words is "eighteen billion, forty-seven million, seven hundred thirty-three thousand, two hundred eighty".