12440240053 has 4 divisors (see below), whose sum is σ = 12441601600. Its totient is φ = 12438878508.

The previous prime is 12440240039. The next prime is 12440240107. The reversal of 12440240053 is 35004204421.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 35004204421 = 233 ⋅150232637.

It is a cyclic number.

It is not a de Polignac number, because 12440240053 - 2⁹ = 12440239541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12440240353) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 666975 + ... + 685372.

It is an arithmetic number, because the mean of its divisors is an integer number (3110400400).

Almost surely, 2^12440240053 is an apocalyptic number.

It is an amenable number.

12440240053 is a deficient number, since it is larger than the sum of its proper divisors (1361547).

12440240053 is an equidigital number, since it uses as much as digits as its factorization.

12440240053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1361546.

The product of its (nonzero) digits is 3840, while the sum is 25.

Adding to 12440240053 its reverse (35004204421), we get a palindrome (47444444474).

The spelling of 12440240053 in words is "twelve billion, four hundred forty million, two hundred forty thousand, fifty-three".