12685110163489 has 2 divisors, whose sum is σ = 12685110163490. Its totient is φ = 12685110163488.

The previous prime is 12685110163487. The next prime is 12685110163501. The reversal of 12685110163489 is 98436101158621.

12685110163489 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11499504952464 + 1185605211025 = 3391092^2 + 1088855^2 .

It is a cyclic number.

It is not a de Polignac number, because 12685110163489 - 2¹ = 12685110163487 is a prime.

Together with 12685110163487, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (12685110163487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6342555081744 + 6342555081745.

It is an arithmetic number, because the mean of its divisors is an integer number (6342555081745).

Almost surely, 2^{12685110163489} is an apocalyptic number.

It is an amenable number.

12685110163489 is a deficient number, since it is larger than the sum of its proper divisors (1).

12685110163489 is an equidigital number, since it uses as much as digits as its factorization.

12685110163489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2488320, while the sum is 55.

The spelling of 12685110163489 in words is "twelve trillion, six hundred eighty-five billion, one hundred ten million, one hundred sixty-three thousand, four hundred eighty-nine".