8423105663617 has 2 divisors, whose sum is σ = 8423105663618. Its totient is φ = 8423105663616.

The previous prime is 8423105663611. The next prime is 8423105663629. The reversal of 8423105663617 is 7163665013248.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4287450619456 + 4135655044161 = 2070616^2 + 2033631^2 .

It is a cyclic number.

It is not a de Polignac number, because 8423105663617 - 2³¹ = 8420958179969 is a prime.

It is not a weakly prime, because it can be changed into another prime (8423105663611) 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, 4211552831808 + 4211552831809.

It is an arithmetic number, because the mean of its divisors is an integer number (4211552831809).

Almost surely, 2^{8423105663617} is an apocalyptic number.

It is an amenable number.

8423105663617 is a deficient number, since it is larger than the sum of its proper divisors (1).

8423105663617 is an equidigital number, since it uses as much as digits as its factorization.

8423105663617 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4354560, while the sum is 52.

The spelling of 8423105663617 in words is "eight trillion, four hundred twenty-three billion, one hundred five million, six hundred sixty-three thousand, six hundred seventeen".