12256738469 has 2 divisors, whose sum is σ = 12256738470. Its totient is φ = 12256738468.

The previous prime is 12256738423. The next prime is 12256738573. The reversal of 12256738469 is 96483765221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12246078244 + 10660225 = 110662^2 + 3265^2 .

It is a cyclic number.

It is not a de Polignac number, because 12256738469 - 2¹⁶ = 12256672933 is a prime.

It is a super-2 number, since 2×12256738469² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12256738469.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12256738969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6128369234 + 6128369235.

It is an arithmetic number, because the mean of its divisors is an integer number (6128369235).

Almost surely, 2^12256738469 is an apocalyptic number.

It is an amenable number.

12256738469 is a deficient number, since it is larger than the sum of its proper divisors (1).

12256738469 is an equidigital number, since it uses as much as digits as its factorization.

12256738469 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4354560, while the sum is 53.

The spelling of 12256738469 in words is "twelve billion, two hundred fifty-six million, seven hundred thirty-eight thousand, four hundred sixty-nine".