5515665611 has 2 divisors, whose sum is σ = 5515665612. Its totient is φ = 5515665610.

The previous prime is 5515665593. The next prime is 5515665613. The reversal of 5515665611 is 1165665155.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 5515665611 - 2¹⁰ = 5515664587 is a prime.

Together with 5515665613, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (5515665613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2757832805 + 2757832806.

It is an arithmetic number, because the mean of its divisors is an integer number (2757832806).

Almost surely, 2^5515665611 is an apocalyptic number.

5515665611 is a deficient number, since it is larger than the sum of its proper divisors (1).

5515665611 is an equidigital number, since it uses as much as digits as its factorization.

5515665611 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 135000, while the sum is 41.

The square root of 5515665611 is about 74267.5272982748. The cubic root of 5515665611 is about 1766.8484900360.

The spelling of 5515665611 in words is "five billion, five hundred fifteen million, six hundred sixty-five thousand, six hundred eleven".