12440140005 has 32 divisors (see below), whose sum is σ = 20676902400. Its totient is φ = 6379100672.

The previous prime is 12440140001. The next prime is 12440140049. The reversal of 12440140005 is 50004104421.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 12440140005 - 2² = 12440140001 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12440140001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 44137 + ... + 163793.

It is an arithmetic number, because the mean of its divisors is an integer number (646153200).

Almost surely, 2^12440140005 is an apocalyptic number.

12440140005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12440140005 is a deficient number, since it is larger than the sum of its proper divisors (8236762395).

12440140005 is a wasteful number, since it uses less digits than its factorization.

12440140005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119933.

The product of its (nonzero) digits is 640, while the sum is 21.

Adding to 12440140005 its reverse (50004104421), we get a palindrome (62444244426).

The spelling of 12440140005 in words is "twelve billion, four hundred forty million, one hundred forty thousand, five".