11116632565 has 4 divisors (see below), whose sum is σ = 13339959084. Its totient is φ = 8893306048.

The previous prime is 11116632517. The next prime is 11116632587. The reversal of 11116632565 is 56523661111.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3294645201 + 7821987364 = 57399^2 + 88442^2 .

It is a cyclic number.

It is not a de Polignac number, because 11116632565 - 2¹⁷ = 11116501493 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1111663252 + ... + 1111663261.

It is an arithmetic number, because the mean of its divisors is an integer number (3334989771).

Almost surely, 2^11116632565 is an apocalyptic number.

It is an amenable number.

11116632565 is a deficient number, since it is larger than the sum of its proper divisors (2223326519).

11116632565 is an equidigital number, since it uses as much as digits as its factorization.

11116632565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2223326518.

The product of its digits is 32400, while the sum is 37.

The spelling of 11116632565 in words is "eleven billion, one hundred sixteen million, six hundred thirty-two thousand, five hundred sixty-five".