2611559563 has 2 divisors, whose sum is σ = 2611559564. Its totient is φ = 2611559562.

The previous prime is 2611559497. The next prime is 2611559569. The reversal of 2611559563 is 3659551162.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2611559563 is a prime.

It is not a weakly prime, because it can be changed into another prime (2611559569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1305779781 + 1305779782.

It is an arithmetic number, because the mean of its divisors is an integer number (1305779782).

Almost surely, 2^2611559563 is an apocalyptic number.

2611559563 is a deficient number, since it is larger than the sum of its proper divisors (1).

2611559563 is an equidigital number, since it uses as much as digits as its factorization.

2611559563 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 243000, while the sum is 43.

The square root of 2611559563 is about 51103.4202671406. The cubic root of 2611559563 is about 1377.1036999725.

The spelling of 2611559563 in words is "two billion, six hundred eleven million, five hundred fifty-nine thousand, five hundred sixty-three".