5636047561 has 2 divisors, whose sum is σ = 5636047562. Its totient is φ = 5636047560.

The previous prime is 5636047541. The next prime is 5636047579. The reversal of 5636047561 is 1657406365.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4968135225 + 667912336 = 70485^2 + 25844^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5636047561 is a prime.

It is not a weakly prime, because it can be changed into another prime (5636047541) 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 as a sum of consecutive naturals, namely, 2818023780 + 2818023781.

It is an arithmetic number, because the mean of its divisors is an integer number (2818023781).

Almost surely, 2^5636047561 is an apocalyptic number.

It is an amenable number.

5636047561 is a deficient number, since it is larger than the sum of its proper divisors (1).

5636047561 is an equidigital number, since it uses as much as digits as its factorization.

5636047561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 453600, while the sum is 43.

The square root of 5636047561 is about 75073.6142795856. The cubic root of 5636047561 is about 1779.6101870159.

The spelling of 5636047561 in words is "five billion, six hundred thirty-six million, forty-seven thousand, five hundred sixty-one".