11066111505 has 24 divisors (see below), whose sum is σ = 19184104680. Its totient is φ = 5901050880.

The previous prime is 11066111503. The next prime is 11066111513. The reversal of 11066111505 is 50511166011.

11066111505 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 5803281 + 11060308224 = 2409^2 + 105168^2 .

It is not a de Polignac number, because 11066111505 - 2¹ = 11066111503 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11066111503) 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 23 ways as a sum of consecutive naturals, for example, 388035 + ... + 415575.

It is an arithmetic number, because the mean of its divisors is an integer number (799337695).

Almost surely, 2^11066111505 is an apocalyptic number.

11066111505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11066111505 is a deficient number, since it is larger than the sum of its proper divisors (8117993175).

11066111505 is a wasteful number, since it uses less digits than its factorization.

11066111505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36481 (or 36478 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 27.

Adding to 11066111505 its reverse (50511166011), we get a palindrome (61577277516).

The spelling of 11066111505 in words is "eleven billion, sixty-six million, one hundred eleven thousand, five hundred five".