63717336313 has 2 divisors, whose sum is σ = 63717336314. Its totient is φ = 63717336312.

The previous prime is 63717336311. The next prime is 63717336343. The reversal of 63717336313 is 31363371736.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 59573581929 + 4143754384 = 244077^2 + 64372^2 .

It is a cyclic number.

It is not a de Polignac number, because 63717336313 - 2¹ = 63717336311 is a prime.

Together with 63717336311, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 63717336313.

It is not a weakly prime, because it can be changed into another prime (63717336311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31858668156 + 31858668157.

It is an arithmetic number, because the mean of its divisors is an integer number (31858668157).

Almost surely, 2^63717336313 is an apocalyptic number.

It is an amenable number.

63717336313 is a deficient number, since it is larger than the sum of its proper divisors (1).

63717336313 is an equidigital number, since it uses as much as digits as its factorization.

63717336313 is an evil number, because the sum of its binary digits is even.

The product of its digits is 428652, while the sum is 43.

The spelling of 63717336313 in words is "sixty-three billion, seven hundred seventeen million, three hundred thirty-six thousand, three hundred thirteen".