12256267797 has 12 divisors (see below), whose sum is σ = 18181971340. Its totient is φ = 7950011328.

The previous prime is 12256267789. The next prime is 12256267909. The reversal of 12256267797 is 79776265221.

It is a happy number.

12256267797 is a `hidden beast` number, since 1 + 2 + 2 + 5 + 626 + 7 + 7 + 9 + 7 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 7105478436 + 5150789361 = 84294^2 + 71769^2 .

It is not a de Polignac number, because 12256267797 - 2³ = 12256267789 is a prime.

It is a super-2 number, since 2×12256267797² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12256267297) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18402472 + ... + 18403137.

Almost surely, 2^12256267797 is an apocalyptic number.

It is an amenable number.

12256267797 is a deficient number, since it is larger than the sum of its proper divisors (5925703543).

12256267797 is a wasteful number, since it uses less digits than its factorization.

12256267797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36805652 (or 36805649 counting only the distinct ones).

The product of its digits is 4445280, while the sum is 54.

The spelling of 12256267797 in words is "twelve billion, two hundred fifty-six million, two hundred sixty-seven thousand, seven hundred ninety-seven".