13528648663 has 4 divisors (see below), whose sum is σ = 13529176848. Its totient is φ = 13528120480.

The previous prime is 13528648657. The next prime is 13528648673. The reversal of 13528648663 is 36684682531.

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

It is a cyclic number.

It is not a de Polignac number, because 13528648663 - 2²⁵ = 13495094231 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13528648663.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13528648633) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 223603 + ... + 277588.

It is an arithmetic number, because the mean of its divisors is an integer number (3382294212).

Almost surely, 2^13528648663 is an apocalyptic number.

13528648663 is a deficient number, since it is larger than the sum of its proper divisors (528185).

13528648663 is an equidigital number, since it uses as much as digits as its factorization.

13528648663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 528184.

The product of its digits is 4976640, while the sum is 52.

The spelling of 13528648663 in words is "thirteen billion, five hundred twenty-eight million, six hundred forty-eight thousand, six hundred sixty-three".