12440140244 has 24 divisors (see below), whose sum is σ = 24984395520. Its totient is φ = 5309178336.

The previous prime is 12440140217. The next prime is 12440140247. The reversal of 12440140244 is 44204104421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12440140247) 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, 922787 + ... + 936170.

It is an arithmetic number, because the mean of its divisors is an integer number (1041016480).

Almost surely, 2^12440140244 is an apocalyptic number.

12440140244 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

12440140244 is an abundant number, since it is smaller than the sum of its proper divisors (12544255276).

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

12440140244 is a wasteful number, since it uses less digits than its factorization.

12440140244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1859207 (or 1859205 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 26.

Adding to 12440140244 its reverse (44204104421), we get a palindrome (56644244665).

The spelling of 12440140244 in words is "twelve billion, four hundred forty million, one hundred forty thousand, two hundred forty-four".