12917780287663 has 2 divisors, whose sum is σ = 12917780287664. Its totient is φ = 12917780287662.

The previous prime is 12917780287661. The next prime is 12917780287759. The reversal of 12917780287663 is 36678208771921.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12917780287663 - 2¹ = 12917780287661 is a prime.

Together with 12917780287661, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12917780287661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6458890143831 + 6458890143832.

It is an arithmetic number, because the mean of its divisors is an integer number (6458890143832).

Almost surely, 2^{12917780287663} is an apocalyptic number.

12917780287663 is a deficient number, since it is larger than the sum of its proper divisors (1).

12917780287663 is an equidigital number, since it uses as much as digits as its factorization.

12917780287663 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 85349376, while the sum is 67.

The spelling of 12917780287663 in words is "twelve trillion, nine hundred seventeen billion, seven hundred eighty million, two hundred eighty-seven thousand, six hundred sixty-three".