18027709056 has 256 divisors, whose sum is σ = 60983596800. Its totient is φ = 5135892480.

The previous prime is 18027709043. The next prime is 18027709079. The reversal of 18027709056 is 65090772081.

It is a super-2 number, since 2×18027709056² (a number of 21 digits) contains 22 as substring.

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, 10474276 + ... + 10475996.

It is an arithmetic number, because the mean of its divisors is an integer number (238217175).

Almost surely, 2^18027709056 is an apocalyptic number.

18027709056 is a gapful number since it is divisible by the number (16) 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 18027709056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30491798400).

18027709056 is an abundant number, since it is smaller than the sum of its proper divisors (42955887744).

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

18027709056 is a wasteful number, since it uses less digits than its factorization.

18027709056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2184 (or 2166 counting only the distinct ones).

The product of its (nonzero) digits is 211680, while the sum is 45.

The spelling of 18027709056 in words is "eighteen billion, twenty-seven million, seven hundred nine thousand, fifty-six".