11112311605 has 4 divisors (see below), whose sum is σ = 13334773932. Its totient is φ = 8889849280.

The previous prime is 11112311597. The next prime is 11112311627. The reversal of 11112311605 is 50611321111.

11112311605 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 7694973841 + 3417337764 = 87721^2 + 58458^2 .

It is not a de Polignac number, because 11112311605 - 2³ = 11112311597 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 (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1111231156 + ... + 1111231165.

It is an arithmetic number, because the mean of its divisors is an integer number (3333693483).

Almost surely, 2^11112311605 is an apocalyptic number.

It is an amenable number.

11112311605 is a deficient number, since it is larger than the sum of its proper divisors (2222462327).

11112311605 is an equidigital number, since it uses as much as digits as its factorization.

11112311605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2222462326.

The product of its (nonzero) digits is 180, while the sum is 22.

Adding to 11112311605 its reverse (50611321111), we get a palindrome (61723632716).

The spelling of 11112311605 in words is "eleven billion, one hundred twelve million, three hundred eleven thousand, six hundred five".