18008975712 has 384 divisors, whose sum is σ = 62036803584. Its totient is φ = 4444121088.

The previous prime is 18008975683. The next prime is 18008975717. The reversal of 18008975712 is 21757980081.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18008975717) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 9442663 + ... + 9444569.

It is an arithmetic number, because the mean of its divisors is an integer number (161554176).

Almost surely, 2^18008975712 is an apocalyptic number.

18008975712 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 18008975712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31018401792).

18008975712 is an abundant number, since it is smaller than the sum of its proper divisors (44027827872).

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

18008975712 is a wasteful number, since it uses less digits than its factorization.

18008975712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2010 (or 2002 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 48.

The spelling of 18008975712 in words is "eighteen billion, eight million, nine hundred seventy-five thousand, seven hundred twelve".