11132365565 has 16 divisors (see below), whose sum is σ = 13740428208. Its totient is φ = 8652220416.

The previous prime is 11132365553. The next prime is 11132365567. The reversal of 11132365565 is 56556323111.

It can be written as a sum of positive squares in 8 ways, for example, as 18567481 + 11113798084 = 4309^2 + 105422^2 .

It is a cyclic number.

It is not a de Polignac number, because 11132365565 - 2¹⁶ = 11132300029 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11132365567) 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, 79799 + ... + 169211.

It is an arithmetic number, because the mean of its divisors is an integer number (858776763).

Almost surely, 2^11132365565 is an apocalyptic number.

It is an amenable number.

11132365565 is a deficient number, since it is larger than the sum of its proper divisors (2608062643).

11132365565 is an equidigital number, since it uses as much as digits as its factorization.

11132365565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90128.

The product of its digits is 81000, while the sum is 38.

Adding to 11132365565 its reverse (56556323111), we get a palindrome (67688688676).

The spelling of 11132365565 in words is "eleven billion, one hundred thirty-two million, three hundred sixty-five thousand, five hundred sixty-five".