12256738423 has 2 divisors, whose sum is σ = 12256738424. Its totient is φ = 12256738422.

The previous prime is 12256738393. The next prime is 12256738469. The reversal of 12256738423 is 32483765221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12256738423 - 2²¹ = 12254641271 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12256738423.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12256735423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6128369211 + 6128369212.

It is an arithmetic number, because the mean of its divisors is an integer number (6128369212).

Almost surely, 2^12256738423 is an apocalyptic number.

12256738423 is a deficient number, since it is larger than the sum of its proper divisors (1).

12256738423 is an equidigital number, since it uses as much as digits as its factorization.

12256738423 is an evil number, because the sum of its binary digits is even.

The product of its digits is 483840, while the sum is 43.

The spelling of 12256738423 in words is "twelve billion, two hundred fifty-six million, seven hundred thirty-eight thousand, four hundred twenty-three".