12440113451 has 2 divisors, whose sum is σ = 12440113452. Its totient is φ = 12440113450.

The previous prime is 12440113403. The next prime is 12440113453. The reversal of 12440113451 is 15431104421.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12440113451 - 2²⁶ = 12373004587 is a prime.

It is a super-2 number, since 2×12440113451² (a number of 21 digits) contains 22 as substring.

Together with 12440113453, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12440113451.

It is not a weakly prime, because it can be changed into another prime (12440113453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6220056725 + 6220056726.

It is an arithmetic number, because the mean of its divisors is an integer number (6220056726).

Almost surely, 2^12440113451 is an apocalyptic number.

12440113451 is a deficient number, since it is larger than the sum of its proper divisors (1).

12440113451 is an equidigital number, since it uses as much as digits as its factorization.

12440113451 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1920, while the sum is 26.

Adding to 12440113451 its reverse (15431104421), we get a palindrome (27871217872).

The spelling of 12440113451 in words is "twelve billion, four hundred forty million, one hundred thirteen thousand, four hundred fifty-one".