11089311061 has 4 divisors (see below), whose sum is σ = 11090263500. Its totient is φ = 11088358624.

The previous prime is 11089310977. The next prime is 11089311071. The reversal of 11089311061 is 16011398011.

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 3010716900 + 8078594161 = 54870^2 + 89881^2 .

It is a cyclic number.

It is not a de Polignac number, because 11089311061 - 2¹⁵ = 11089278293 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 (11089311071) 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 3 ways as a sum of consecutive naturals, for example, 458536 + ... + 482113.

It is an arithmetic number, because the mean of its divisors is an integer number (2772565875).

Almost surely, 2^11089311061 is an apocalyptic number.

It is an amenable number.

11089311061 is a deficient number, since it is larger than the sum of its proper divisors (952439).

11089311061 is an equidigital number, since it uses as much as digits as its factorization.

11089311061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 952438.

The product of its (nonzero) digits is 1296, while the sum is 31.

The spelling of 11089311061 in words is "eleven billion, eighty-nine million, three hundred eleven thousand, sixty-one".