11365265663 has 32 divisors (see below), whose sum is σ = 13150126080. Its totient is φ = 9751104000.

The previous prime is 11365265651. The next prime is 11365265711. The reversal of 11365265663 is 36656256311.

It is a Cunningham number, because it is equal to 106608²-1.

It is not a de Polignac number, because 11365265663 - 2⁴ = 11365265647 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11365265623) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 1809218 + ... + 1815488.

It is an arithmetic number, because the mean of its divisors is an integer number (410941440).

Almost surely, 2^11365265663 is an apocalyptic number.

11365265663 is a deficient number, since it is larger than the sum of its proper divisors (1784860417).

11365265663 is a wasteful number, since it uses less digits than its factorization.

11365265663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6519.

The product of its digits is 583200, while the sum is 44.

The spelling of 11365265663 in words is "eleven billion, three hundred sixty-five million, two hundred sixty-five thousand, six hundred sixty-three".