12440323024 has 20 divisors (see below), whose sum is σ = 24934269060. Its totient is φ = 6005672960.

The previous prime is 12440322989. The next prime is 12440323057. The reversal of 12440323024 is 42032304421.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 5985807424 + 6454515600 = 77368^2 + 80340^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12440323024.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13405057 + ... + 13405984.

It is an arithmetic number, because the mean of its divisors is an integer number (1246713453).

Almost surely, 2^12440323024 is an apocalyptic number.

It is an amenable number.

12440323024 is an abundant number, since it is smaller than the sum of its proper divisors (12493946036).

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

12440323024 is a wasteful number, since it uses less digits than its factorization.

12440323024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26811078 (or 26811072 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 25.

Adding to 12440323024 its reverse (42032304421), we get a palindrome (54472627445).

The spelling of 12440323024 in words is "twelve billion, four hundred forty million, three hundred twenty-three thousand, twenty-four".