13685540663 has 2 divisors, whose sum is σ = 13685540664. Its totient is φ = 13685540662.

The previous prime is 13685540629. The next prime is 13685540711. The reversal of 13685540663 is 36604558631.

It is a weak prime.

It is an emirp because it is prime and its reverse (36604558631) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13685540663 - 2⁶ = 13685540599 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13685546663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6842770331 + 6842770332.

It is an arithmetic number, because the mean of its divisors is an integer number (6842770332).

Almost surely, 2^13685540663 is an apocalyptic number.

13685540663 is a deficient number, since it is larger than the sum of its proper divisors (1).

13685540663 is an equidigital number, since it uses as much as digits as its factorization.

13685540663 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1555200, while the sum is 47.

The spelling of 13685540663 in words is "thirteen billion, six hundred eighty-five million, five hundred forty thousand, six hundred sixty-three".