12012992800 has 144 divisors (see below), whose sum is σ = 30151820160. Its totient is φ = 4671912960.

The previous prime is 12012992791. The next prime is 12012992813. The reversal of 12012992800 is 829921021.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4232982 + ... + 4235818.

It is an arithmetic number, because the mean of its divisors is an integer number (209387640).

Almost surely, 2^12012992800 is an apocalyptic number.

12012992800 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 12012992800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15075910080).

12012992800 is an abundant number, since it is smaller than the sum of its proper divisors (18138827360).

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

12012992800 is a wasteful number, since it uses less digits than its factorization.

12012992800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3003 (or 2990 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 34.

The spelling of 12012992800 in words is "twelve billion, twelve million, nine hundred ninety-two thousand, eight hundred".