12689339739641 has 2 divisors, whose sum is σ = 12689339739642. Its totient is φ = 12689339739640.

The previous prime is 12689339739607. The next prime is 12689339739673. The reversal of 12689339739641 is 14693793398621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12664374159616 + 24965580025 = 3558704^2 + 158005^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12689339739641 is a prime.

It is a super-2 number, since 2×12689339739641² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12689339739941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6344669869820 + 6344669869821.

It is an arithmetic number, because the mean of its divisors is an integer number (6344669869821).

Almost surely, 2^{12689339739641} is an apocalyptic number.

It is an amenable number.

12689339739641 is a deficient number, since it is larger than the sum of its proper divisors (1).

12689339739641 is an equidigital number, since it uses as much as digits as its factorization.

12689339739641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 317447424, while the sum is 71.

The spelling of 12689339739641 in words is "twelve trillion, six hundred eighty-nine billion, three hundred thirty-nine million, seven hundred thirty-nine thousand, six hundred forty-one".