11165206563 has 32 divisors (see below), whose sum is σ = 19131840000. Its totient is φ = 6303240288.

The previous prime is 11165206561. The next prime is 11165206573. The reversal of 11165206563 is 36560256111.

11165206563 is a `hidden beast` number, since 1 + 1 + 16 + 520 + 65 + 63 = 666.

11165206563 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11165206563 - 2¹ = 11165206561 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11165206561) 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 31 ways as a sum of consecutive naturals, for example, 340188 + ... + 371561.

It is an arithmetic number, because the mean of its divisors is an integer number (597870000).

Almost surely, 2^11165206563 is an apocalyptic number.

11165206563 is a deficient number, since it is larger than the sum of its proper divisors (7966633437).

11165206563 is an equidigital number, since it uses as much as digits as its factorization.

11165206563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 711848 (or 711842 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The spelling of 11165206563 in words is "eleven billion, one hundred sixty-five million, two hundred six thousand, five hundred sixty-three".