12839891297 has 4 divisors (see below), whose sum is σ = 12853034436. Its totient is φ = 12826748160.

The previous prime is 12839891287. The next prime is 12839891327. The reversal of 12839891297 is 79219893821.

12839891297 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11538197056 + 1301694241 = 107416^2 + 36079^2 .

It is a cyclic number.

It is not a de Polignac number, because 12839891297 - 2¹² = 12839887201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12839891227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6570104 + ... + 6572057.

It is an arithmetic number, because the mean of its divisors is an integer number (3213258609).

Almost surely, 2^12839891297 is an apocalyptic number.

It is an amenable number.

12839891297 is a deficient number, since it is larger than the sum of its proper divisors (13143139).

12839891297 is an equidigital number, since it uses as much as digits as its factorization.

12839891297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13143138.

The product of its digits is 3919104, while the sum is 59.

The spelling of 12839891297 in words is "twelve billion, eight hundred thirty-nine million, eight hundred ninety-one thousand, two hundred ninety-seven".