12440131040 has 24 divisors (see below), whose sum is σ = 29389809960. Its totient is φ = 4976052352.

The previous prime is 12440131007. The next prime is 12440131063. The reversal of 12440131040 is 4013104421.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38875250 + ... + 38875569.

It is an arithmetic number, because the mean of its divisors is an integer number (1224575415).

Almost surely, 2^12440131040 is an apocalyptic number.

12440131040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12440131040 is an abundant number, since it is smaller than the sum of its proper divisors (16949678920).

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

12440131040 is an equidigital number, since it uses as much as digits as its factorization.

12440131040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77750834 (or 77750826 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 12440131040 its reverse (4013104421), we get a palindrome (16453235461).

The spelling of 12440131040 in words is "twelve billion, four hundred forty million, one hundred thirty-one thousand, forty".