5005105561 has 2 divisors, whose sum is σ = 5005105562. Its totient is φ = 5005105560.

The previous prime is 5005105559. The next prime is 5005105579. The reversal of 5005105561 is 1655015005.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3875809536 + 1129296025 = 62256^2 + 33605^2 .

It is a cyclic number.

It is not a de Polignac number, because 5005105561 - 2¹ = 5005105559 is a prime.

Together with 5005105559, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (5005105361) 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, 2502552780 + 2502552781.

It is an arithmetic number, because the mean of its divisors is an integer number (2502552781).

Almost surely, 2^5005105561 is an apocalyptic number.

It is an amenable number.

5005105561 is a deficient number, since it is larger than the sum of its proper divisors (1).

5005105561 is an equidigital number, since it uses as much as digits as its factorization.

5005105561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3750, while the sum is 28.

The square root of 5005105561 is about 70746.7706754167. The cubic root of 5005105561 is about 1710.5577744514.

The spelling of 5005105561 in words is "five billion, five million, one hundred five thousand, five hundred sixty-one".