12782826436 has 6 divisors (see below), whose sum is σ = 22369946270. Its totient is φ = 6391413216.

The previous prime is 12782826421. The next prime is 12782826437. The reversal of 12782826436 is 63462828721.

It can be written as a sum of positive squares in only one way, i.e., 7455286336 + 5327540100 = 86344^2 + 72990^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12782826436.

It is not an unprimeable number, because it can be changed into a prime (12782826437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1597853301 + ... + 1597853308.

Almost surely, 2^12782826436 is an apocalyptic number.

It is an amenable number.

12782826436 is a deficient number, since it is larger than the sum of its proper divisors (9587119834).

12782826436 is a wasteful number, since it uses less digits than its factorization.

12782826436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3195706613 (or 3195706611 counting only the distinct ones).

The product of its digits is 1548288, while the sum is 49.

The spelling of 12782826436 in words is "twelve billion, seven hundred eighty-two million, eight hundred twenty-six thousand, four hundred thirty-six".