13694649663 has 4 divisors (see below), whose sum is σ = 18259532888. Its totient is φ = 9129766440.

The previous prime is 13694649653. The next prime is 13694649667. The reversal of 13694649663 is 36694649631.

13694649663 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 13694649663 - 2¹⁴ = 13694633279 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13694649667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2282441608 + ... + 2282441613.

It is an arithmetic number, because the mean of its divisors is an integer number (4564883222).

Almost surely, 2^13694649663 is an apocalyptic number.

13694649663 is a deficient number, since it is larger than the sum of its proper divisors (4564883225).

13694649663 is an equidigital number, since it uses as much as digits as its factorization.

13694649663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4564883224.

The product of its digits is 15116544, while the sum is 57.

The spelling of 13694649663 in words is "thirteen billion, six hundred ninety-four million, six hundred forty-nine thousand, six hundred sixty-three".