63543577662317 has 2 divisors, whose sum is σ = 63543577662318. Its totient is φ = 63543577662316.

The previous prime is 63543577662293. The next prime is 63543577662337. The reversal of 63543577662317 is 71326677534536.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42567351701956 + 20976225960361 = 6524366^2 + 4579981^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63543577662317 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63543577662337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31771788831158 + 31771788831159.

It is an arithmetic number, because the mean of its divisors is an integer number (31771788831159).

Almost surely, 2^{63543577662317} is an apocalyptic number.

It is an amenable number.

63543577662317 is a deficient number, since it is larger than the sum of its proper divisors (1).

63543577662317 is an equidigital number, since it uses as much as digits as its factorization.

63543577662317 is an evil number, because the sum of its binary digits is even.

The product of its digits is 400075200, while the sum is 65.

The spelling of 63543577662317 in words is "sixty-three trillion, five hundred forty-three billion, five hundred seventy-seven million, six hundred sixty-two thousand, three hundred seventeen".