561363645431363 has 2 divisors, whose sum is σ = 561363645431364. Its totient is φ = 561363645431362.

The previous prime is 561363645431297. The next prime is 561363645431399. The reversal of 561363645431363 is 363134546363165.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-561363645431363 is a prime.

It is not a weakly prime, because it can be changed into another prime (561363645461363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 280681822715681 + 280681822715682.

It is an arithmetic number, because the mean of its divisors is an integer number (280681822715682).

Almost surely, 2^{561363645431363} is an apocalyptic number.

561363645431363 is a deficient number, since it is larger than the sum of its proper divisors (1).

561363645431363 is an equidigital number, since it uses as much as digits as its factorization.

561363645431363 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 125971200, while the sum is 59.

The spelling of 561363645431363 in words is "five hundred sixty-one trillion, three hundred sixty-three billion, six hundred forty-five million, four hundred thirty-one thousand, three hundred sixty-three".