663463143617 has 2 divisors, whose sum is σ = 663463143618. Its totient is φ = 663463143616.

The previous prime is 663463143601. The next prime is 663463143647. The reversal of 663463143617 is 716341364366.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 587063972401 + 76399171216 = 766201^2 + 276404^2 .

It is a cyclic number.

It is not a de Polignac number, because 663463143617 - 2⁴ = 663463143601 is a prime.

It is not a weakly prime, because it can be changed into another prime (663463143647) 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, 331731571808 + 331731571809.

It is an arithmetic number, because the mean of its divisors is an integer number (331731571809).

Almost surely, 2^663463143617 is an apocalyptic number.

It is an amenable number.

663463143617 is a deficient number, since it is larger than the sum of its proper divisors (1).

663463143617 is an equidigital number, since it uses as much as digits as its factorization.

663463143617 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3919104, while the sum is 50.

The spelling of 663463143617 in words is "six hundred sixty-three billion, four hundred sixty-three million, one hundred forty-three thousand, six hundred seventeen".