13563263216065 has 16 divisors (see below), whose sum is σ = 16654945209408. Its totient is φ = 10597940087616.

The previous prime is 13563263216057. The next prime is 13563263216071. The reversal of 13563263216065 is 56061236236531.

It is a cyclic number.

It is not a de Polignac number, because 13563263216065 - 2³ = 13563263216057 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6038259 + ... + 7974151.

It is an arithmetic number, because the mean of its divisors is an integer number (1040934075588).

Almost surely, 2^{13563263216065} is an apocalyptic number.

It is an amenable number.

13563263216065 is a deficient number, since it is larger than the sum of its proper divisors (3091681993343).

13563263216065 is a wasteful number, since it uses less digits than its factorization.

13563263216065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1968528.

The product of its (nonzero) digits is 3499200, while the sum is 49.

The spelling of 13563263216065 in words is "thirteen trillion, five hundred sixty-three billion, two hundred sixty-three million, two hundred sixteen thousand, sixty-five".