12786738289 has 32 divisors (see below), whose sum is σ = 14778941184. Its totient is φ = 10971966720.

The previous prime is 12786738281. The next prime is 12786738311. The reversal of 12786738289 is 98283768721.

It is not a de Polignac number, because 12786738289 - 2³ = 12786738281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12786738281) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1691859 + ... + 1699399.

It is an arithmetic number, because the mean of its divisors is an integer number (461841912).

Almost surely, 2^12786738289 is an apocalyptic number.

It is an amenable number.

12786738289 is a deficient number, since it is larger than the sum of its proper divisors (1992202895).

12786738289 is a wasteful number, since it uses less digits than its factorization.

12786738289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7737.

The product of its digits is 16257024, while the sum is 61.

The spelling of 12786738289 in words is "twelve billion, seven hundred eighty-six million, seven hundred thirty-eight thousand, two hundred eighty-nine".