13045865563 has 16 divisors (see below), whose sum is σ = 13819841280. Its totient is φ = 12295065600.

The previous prime is 13045865561. The next prime is 13045865593. The reversal of 13045865563 is 36556854031.

It is a cyclic number.

It is not a de Polignac number, because 13045865563 - 2¹ = 13045865561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13045865561) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 724473 + ... + 742261.

It is an arithmetic number, because the mean of its divisors is an integer number (863740080).

Almost surely, 2^13045865563 is an apocalyptic number.

13045865563 is a deficient number, since it is larger than the sum of its proper divisors (773975717).

13045865563 is a wasteful number, since it uses less digits than its factorization.

13045865563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18438.

The product of its (nonzero) digits is 1296000, while the sum is 46.

The spelling of 13045865563 in words is "thirteen billion, forty-five million, eight hundred sixty-five thousand, five hundred sixty-three".