12443440312 has 64 divisors (see below), whose sum is σ = 24890976000. Its totient is φ = 5819049984.

The previous prime is 12443440307. The next prime is 12443440357. The reversal of 12443440312 is 21304434421.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2092239 + ... + 2098177.

It is an arithmetic number, because the mean of its divisors is an integer number (388921500).

Almost surely, 2^12443440312 is an apocalyptic number.

It is an amenable number.

12443440312 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

12443440312 is a wasteful number, since it uses less digits than its factorization.

12443440312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6220 (or 6216 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 12443440312 its reverse (21304434421), we get a palindrome (33747874733).

The spelling of 12443440312 in words is "twelve billion, four hundred forty-three million, four hundred forty thousand, three hundred twelve".