12442513453 has 2 divisors, whose sum is σ = 12442513454. Its totient is φ = 12442513452.

The previous prime is 12442513441. The next prime is 12442513459. The reversal of 12442513453 is 35431524421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7522613289 + 4919900164 = 86733^2 + 70142^2 .

It is a cyclic number.

It is not a de Polignac number, because 12442513453 - 2²⁵ = 12408959021 is a prime.

It is a super-2 number, since 2×12442513453² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12442513459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6221256726 + 6221256727.

It is an arithmetic number, because the mean of its divisors is an integer number (6221256727).

Almost surely, 2^12442513453 is an apocalyptic number.

It is an amenable number.

12442513453 is a deficient number, since it is larger than the sum of its proper divisors (1).

12442513453 is an equidigital number, since it uses as much as digits as its factorization.

12442513453 is an evil number, because the sum of its binary digits is even.

The product of its digits is 57600, while the sum is 34.

The spelling of 12442513453 in words is "twelve billion, four hundred forty-two million, five hundred thirteen thousand, four hundred fifty-three".