12444031440 has 120 divisors (see below), whose sum is σ = 42763200480. Its totient is φ = 3241228032.

The previous prime is 12444031393. The next prime is 12444031441. The reversal of 12444031440 is 4413044421.

12444031440 is a `hidden beast` number, since 1 + 244 + 403 + 14 + 4 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (120).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12444031441) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 170010 + ... + 231929.

It is an arithmetic number, because the mean of its divisors is an integer number (356360004).

Almost surely, 2^12444031440 is an apocalyptic number.

12444031440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12444031440 is an abundant number, since it is smaller than the sum of its proper divisors (30319169040).

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

12444031440 is a wasteful number, since it uses less digits than its factorization.

12444031440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 402001 (or 401992 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

Adding to 12444031440 its reverse (4413044421), we get a palindrome (16857075861).

The spelling of 12444031440 in words is "twelve billion, four hundred forty-four million, thirty-one thousand, four hundred forty".