12786336928269 has 36 divisors (see below), whose sum is σ = 19177501190484. Its totient is φ = 8208335895552.

The previous prime is 12786336928243. The next prime is 12786336928297. The reversal of 12786336928269 is 96282963368721.

It is a happy number.

12786336928269 is a `hidden beast` number, since 1 + 2 + 7 + 8 + 6 + 336 + 9 + 28 + 269 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 5871340917225 + 6914996011044 = 2423085^2 + 2629638^2 .

It is not a de Polignac number, because 12786336928269 - 2⁹ = 12786336927757 is a prime.

It is a super-2 number, since 2×12786336928269² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12786336928197 and 12786336928206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12786336908269) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 4154182 + ... + 6544455.

Almost surely, 2^{12786336928269} is an apocalyptic number.

It is an amenable number.

12786336928269 is a deficient number, since it is larger than the sum of its proper divisors (6391164262215).

12786336928269 is a wasteful number, since it uses less digits than its factorization.

12786336928269 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10698814 (or 10698774 counting only the distinct ones).

The product of its digits is 564350976, while the sum is 72.

The spelling of 12786336928269 in words is "twelve trillion, seven hundred eighty-six billion, three hundred thirty-six million, nine hundred twenty-eight thousand, two hundred sixty-nine".