13663856988443 has 2 divisors, whose sum is σ = 13663856988444. Its totient is φ = 13663856988442.

The previous prime is 13663856988437. The next prime is 13663856988499. The reversal of 13663856988443 is 34488965836631.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13663856988443 - 2⁴ = 13663856988427 is a prime.

It is not a weakly prime, because it can be changed into another prime (13663856988433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6831928494221 + 6831928494222.

It is an arithmetic number, because the mean of its divisors is an integer number (6831928494222).

Almost surely, 2^{13663856988443} is an apocalyptic number.

13663856988443 is a deficient number, since it is larger than the sum of its proper divisors (1).

13663856988443 is an equidigital number, since it uses as much as digits as its factorization.

13663856988443 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2149908480, while the sum is 74.

The spelling of 13663856988443 in words is "thirteen trillion, six hundred sixty-three billion, eight hundred fifty-six million, nine hundred eighty-eight thousand, four hundred forty-three".