11085335561 has 4 divisors (see below), whose sum is σ = 11099903124. Its totient is φ = 11070768000.

The previous prime is 11085335557. The next prime is 11085335567. The reversal of 11085335561 is 16553358011.

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 648669961 + 10436665600 = 25469^2 + 102160^2 .

It is a cyclic number.

It is not a de Polignac number, because 11085335561 - 2² = 11085335557 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11085335567) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7282640 + ... + 7284161.

It is an arithmetic number, because the mean of its divisors is an integer number (2774975781).

Almost surely, 2^11085335561 is an apocalyptic number.

It is an amenable number.

11085335561 is a deficient number, since it is larger than the sum of its proper divisors (14567563).

11085335561 is an equidigital number, since it uses as much as digits as its factorization.

11085335561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14567562.

The product of its (nonzero) digits is 54000, while the sum is 38.

The spelling of 11085335561 in words is "eleven billion, eighty-five million, three hundred thirty-five thousand, five hundred sixty-one".