11165612305 has 4 divisors (see below), whose sum is σ = 13398734772. Its totient is φ = 8932489840.

The previous prime is 11165612299. The next prime is 11165612321. The reversal of 11165612305 is 50321656111.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50321656111 = 2503 ⋅20104537.

It can be written as a sum of positive squares in 2 ways, for example, as 7898232384 + 3267379921 = 88872^2 + 57161^2 .

It is a de Polignac number, because none of the positive numbers 2^k-11165612305 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1116561226 + ... + 1116561235.

It is an arithmetic number, because the mean of its divisors is an integer number (3349683693).

Almost surely, 2^11165612305 is an apocalyptic number.

It is an amenable number.

11165612305 is a deficient number, since it is larger than the sum of its proper divisors (2233122467).

11165612305 is an equidigital number, since it uses as much as digits as its factorization.

11165612305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2233122466.

The product of its (nonzero) digits is 5400, while the sum is 31.

The spelling of 11165612305 in words is "eleven billion, one hundred sixty-five million, six hundred twelve thousand, three hundred five".