12689339791397 has 2 divisors, whose sum is σ = 12689339791398. Its totient is φ = 12689339791396.

The previous prime is 12689339791379. The next prime is 12689339791411. The reversal of 12689339791397 is 79319793398621.

Together with previous prime (12689339791379) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9898014424321 + 2791325367076 = 3146111^2 + 1670726^2 .

It is an emirp because it is prime and its reverse (79319793398621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12689339791397 - 2¹² = 12689339787301 is a prime.

It is a super-2 number, since 2×12689339791397² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12689339781397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6344669895698 + 6344669895699.

It is an arithmetic number, because the mean of its divisors is an integer number (6344669895699).

Almost surely, 2^{12689339791397} is an apocalyptic number.

It is an amenable number.

12689339791397 is a deficient number, since it is larger than the sum of its proper divisors (1).

12689339791397 is an equidigital number, since it uses as much as digits as its factorization.

12689339791397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 833299488, while the sum is 77.

The spelling of 12689339791397 in words is "twelve trillion, six hundred eighty-nine billion, three hundred thirty-nine million, seven hundred ninety-one thousand, three hundred ninety-seven".