5663257561361 has 2 divisors, whose sum is σ = 5663257561362. Its totient is φ = 5663257561360.

The previous prime is 5663257561187. The next prime is 5663257561391. The reversal of 5663257561361 is 1631657523665.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4873692030736 + 789565530625 = 2207644^2 + 888575^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5663257561361 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 5663257561297 and 5663257561306.

It is not a weakly prime, because it can be changed into another prime (5663257561391) 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, 2831628780680 + 2831628780681.

It is an arithmetic number, because the mean of its divisors is an integer number (2831628780681).

Almost surely, 2^{5663257561361} is an apocalyptic number.

It is an amenable number.

5663257561361 is a deficient number, since it is larger than the sum of its proper divisors (1).

5663257561361 is an equidigital number, since it uses as much as digits as its factorization.

5663257561361 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20412000, while the sum is 56.

The spelling of 5663257561361 in words is "five trillion, six hundred sixty-three billion, two hundred fifty-seven million, five hundred sixty-one thousand, three hundred sixty-one".