12426505281731 has 2 divisors, whose sum is σ = 12426505281732. Its totient is φ = 12426505281730.

The previous prime is 12426505281601. The next prime is 12426505281733. The reversal of 12426505281731 is 13718250562421.

It is a happy number.

12426505281731 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12426505281731 - 2²⁶ = 12426438172867 is a prime.

It is a super-2 number, since 2×12426505281731² (a number of 27 digits) contains 22 as substring.

Together with 12426505281733, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12426505281733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6213252640865 + 6213252640866.

It is an arithmetic number, because the mean of its divisors is an integer number (6213252640866).

Almost surely, 2^{12426505281731} is an apocalyptic number.

12426505281731 is a deficient number, since it is larger than the sum of its proper divisors (1).

12426505281731 is an equidigital number, since it uses as much as digits as its factorization.

12426505281731 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 806400, while the sum is 47.

The spelling of 12426505281731 in words is "twelve trillion, four hundred twenty-six billion, five hundred five million, two hundred eighty-one thousand, seven hundred thirty-one".