11110665611 has 4 divisors (see below), whose sum is σ = 11112266424. Its totient is φ = 11109064800.

The previous prime is 11110665593. The next prime is 11110665619. The reversal of 11110665611 is 11656601111.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11110665611 - 2¹⁸ = 11110403467 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11110665619) 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, 789950 + ... + 803891.

It is an arithmetic number, because the mean of its divisors is an integer number (2778066606).

Almost surely, 2^11110665611 is an apocalyptic number.

11110665611 is a deficient number, since it is larger than the sum of its proper divisors (1600813).

11110665611 is an equidigital number, since it uses as much as digits as its factorization.

11110665611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1600812.

The product of its (nonzero) digits is 1080, while the sum is 29.

The spelling of 11110665611 in words is "eleven billion, one hundred ten million, six hundred sixty-five thousand, six hundred eleven".