12788394289 has 12 divisors (see below), whose sum is σ = 14667827328. Its totient is φ = 11120340440.

The previous prime is 12788394271. The next prime is 12788394299. The reversal of 12788394289 is 98249388721.

It is not a de Polignac number, because 12788394289 - 2⁹ = 12788393777 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12788394209) 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, 2294809 + ... + 2300374.

It is an arithmetic number, because the mean of its divisors is an integer number (1222318944).

Almost surely, 2^12788394289 is an apocalyptic number.

It is an amenable number.

12788394289 is a deficient number, since it is larger than the sum of its proper divisors (1879433039).

12788394289 is a wasteful number, since it uses less digits than its factorization.

12788394289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4595228 (or 4595217 counting only the distinct ones).

The product of its digits is 13934592, while the sum is 61.

The spelling of 12788394289 in words is "twelve billion, seven hundred eighty-eight million, three hundred ninety-four thousand, two hundred eighty-nine".