11565533242211 has 8 divisors (see below), whose sum is σ = 12455270869104. Its totient is φ = 10675807218720.

The previous prime is 11565533242099. The next prime is 11565533242231. The reversal of 11565533242211 is 11224233556511.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11565533242211 - 2¹⁰ = 11565533241187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11565533242231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 772880 + ... + 4871181.

It is an arithmetic number, because the mean of its divisors is an integer number (1556908858638).

Almost surely, 2^{11565533242211} is an apocalyptic number.

11565533242211 is a deficient number, since it is larger than the sum of its proper divisors (889737626893).

11565533242211 is a wasteful number, since it uses less digits than its factorization.

11565533242211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5801701.

The product of its digits is 216000, while the sum is 41.

Adding to 11565533242211 its reverse (11224233556511), we get a palindrome (22789766798722).

The spelling of 11565533242211 in words is "eleven trillion, five hundred sixty-five billion, five hundred thirty-three million, two hundred forty-two thousand, two hundred eleven".