18116383872 has 256 divisors, whose sum is σ = 54004838400. Its totient is φ = 5353463808.

The previous prime is 18116383847. The next prime is 18116383903. The reversal of 18116383872 is 27838361181.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7885828 + ... + 7888124.

It is an arithmetic number, because the mean of its divisors is an integer number (210956400).

Almost surely, 2^18116383872 is an apocalyptic number.

18116383872 is a gapful number since it is divisible by the number (12) 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 18116383872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27002419200).

18116383872 is an abundant number, since it is smaller than the sum of its proper divisors (35888454528).

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

18116383872 is a wasteful number, since it uses less digits than its factorization.

18116383872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2403 (or 2391 counting only the distinct ones).

The product of its digits is 387072, while the sum is 48.

The spelling of 18116383872 in words is "eighteen billion, one hundred sixteen million, three hundred eighty-three thousand, eight hundred seventy-two".