63317668513 has 16 divisors (see below), whose sum is σ = 70002616320. Its totient is φ = 56792534400.

The previous prime is 63317668499. The next prime is 63317668567. The reversal of 63317668513 is 31586671336.

It is a cyclic number.

It is not a de Polignac number, because 63317668513 - 2²⁵ = 63284114081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63317668573) 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 in 15 ways as a sum of consecutive naturals, for example, 127653 + ... + 378061.

It is an arithmetic number, because the mean of its divisors is an integer number (4375163520).

Almost surely, 2^63317668513 is an apocalyptic number.

It is an amenable number.

63317668513 is a deficient number, since it is larger than the sum of its proper divisors (6684947807).

63317668513 is a wasteful number, since it uses less digits than its factorization.

63317668513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250728.

The product of its digits is 1632960, while the sum is 49.

The spelling of 63317668513 in words is "sixty-three billion, three hundred seventeen million, six hundred sixty-eight thousand, five hundred thirteen".