41663716517 has 2 divisors, whose sum is σ = 41663716518. Its totient is φ = 41663716516.

The previous prime is 41663716513. The next prime is 41663716529. The reversal of 41663716517 is 71561736614.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22597906276 + 19065810241 = 150326^2 + 138079^2 .

It is a cyclic number.

It is not a de Polignac number, because 41663716517 - 2² = 41663716513 is a prime.

It is a super-2 number, since 2×41663716517² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (41663716513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20831858258 + 20831858259.

It is an arithmetic number, because the mean of its divisors is an integer number (20831858259).

Almost surely, 2^41663716517 is an apocalyptic number.

It is an amenable number.

41663716517 is a deficient number, since it is larger than the sum of its proper divisors (1).

41663716517 is an equidigital number, since it uses as much as digits as its factorization.

41663716517 is an evil number, because the sum of its binary digits is even.

The product of its digits is 635040, while the sum is 47.

The spelling of 41663716517 in words is "forty-one billion, six hundred sixty-three million, seven hundred sixteen thousand, five hundred seventeen".