12444444444 has 24 divisors (see below), whose sum is σ = 29199260160. Its totient is φ = 4124973424.

The previous prime is 12444444437. The next prime is 12444444449. The reversal of 12444444444 is 44444444421.

It is a nude number because it is divisible by every one of its digits.

12444444444 is a modest number, since divided by 444444 gives 12444 as remainder.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12444444449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2894604 + ... + 2898899.

It is an arithmetic number, because the mean of its divisors is an integer number (1216635840).

Almost surely, 2^12444444444 is an apocalyptic number.

It is an amenable number.

12444444444 is an abundant number, since it is smaller than the sum of its proper divisors (16754815716).

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

12444444444 is a wasteful number, since it uses less digits than its factorization.

12444444444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5793689 (or 5793687 counting only the distinct ones).

The product of its digits is 524288, while the sum is 39.

Adding to 12444444444 its reverse (44444444421), we get a palindrome (56888888865).

The spelling of 12444444444 in words is "twelve billion, four hundred forty-four million, four hundred forty-four thousand, four hundred forty-four".