12440216256 has 224 divisors, whose sum is σ = 37486498560. Its totient is φ = 3609391104.

The previous prime is 12440216251. The next prime is 12440216323. The reversal of 12440216256 is 65261204421.

12440216256 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (12440216251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13135975 + ... + 13136921.

It is an arithmetic number, because the mean of its divisors is an integer number (167350440).

Almost surely, 2^12440216256 is an apocalyptic number.

12440216256 is a gapful number since it is divisible by the number (16) 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 12440216256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18743249280).

12440216256 is an abundant number, since it is smaller than the sum of its proper divisors (25046282304).

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

12440216256 is a wasteful number, since it uses less digits than its factorization.

12440216256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1271 (or 1261 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 33.

The spelling of 12440216256 in words is "twelve billion, four hundred forty million, two hundred sixteen thousand, two hundred fifty-six".