18033647112 has 128 divisors (see below), whose sum is σ = 55687296000. Its totient is φ = 5369794560.

The previous prime is 18033647089. The next prime is 18033647117. The reversal of 18033647112 is 21174633081.

It is a happy number.

18033647112 is a `hidden beast` number, since 1 + 8 + 0 + 3 + 3 + 647 + 1 + 1 + 2 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (18033647117) 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, 16537 + ... + 190632.

It is an arithmetic number, because the mean of its divisors is an integer number (435057000).

Almost surely, 2^18033647112 is an apocalyptic number.

18033647112 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 18033647112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27843648000).

18033647112 is an abundant number, since it is smaller than the sum of its proper divisors (37653648888).

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

18033647112 is a wasteful number, since it uses less digits than its factorization.

18033647112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207228 (or 207218 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The spelling of 18033647112 in words is "eighteen billion, thirty-three million, six hundred forty-seven thousand, one hundred twelve".