12694359013321 has 2 divisors, whose sum is σ = 12694359013322. Its totient is φ = 12694359013320.

The previous prime is 12694359013289. The next prime is 12694359013363. The reversal of 12694359013321 is 12331095349621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12254340384400 + 440018628921 = 3500620^2 + 663339^2 .

It is a cyclic number.

It is not a de Polignac number, because 12694359013321 - 2⁵ = 12694359013289 is a prime.

It is a super-2 number, since 2×12694359013321² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12694359014321) 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, 6347179506660 + 6347179506661.

It is an arithmetic number, because the mean of its divisors is an integer number (6347179506661).

Almost surely, 2^{12694359013321} is an apocalyptic number.

It is an amenable number.

12694359013321 is a deficient number, since it is larger than the sum of its proper divisors (1).

12694359013321 is an equidigital number, since it uses as much as digits as its factorization.

12694359013321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1049760, while the sum is 49.

The spelling of 12694359013321 in words is "twelve trillion, six hundred ninety-four billion, three hundred fifty-nine million, thirteen thousand, three hundred twenty-one".