128663447593567 has 2 divisors, whose sum is σ = 128663447593568. Its totient is φ = 128663447593566.

The previous prime is 128663447593523. The next prime is 128663447593607. The reversal of 128663447593567 is 765395744366821.

It is a strong prime.

It is an emirp because it is prime and its reverse (765395744366821) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-128663447593567 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 128663447593493 and 128663447593502.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128663447593267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64331723796783 + 64331723796784.

It is an arithmetic number, because the mean of its divisors is an integer number (64331723796784).

Almost surely, 2^{128663447593567} is an apocalyptic number.

128663447593567 is a deficient number, since it is larger than the sum of its proper divisors (1).

128663447593567 is an equidigital number, since it uses as much as digits as its factorization.

128663447593567 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5486745600, while the sum is 76.

The spelling of 128663447593567 in words is "one hundred twenty-eight trillion, six hundred sixty-three billion, four hundred forty-seven million, five hundred ninety-three thousand, five hundred sixty-seven".