63716944895 has 4 divisors (see below), whose sum is σ = 76460333880. Its totient is φ = 50973555912.

The previous prime is 63716944883. The next prime is 63716944901. The reversal of 63716944895 is 59844961736.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63716944895 is a prime.

It is a super-2 number, since 2×63716944895² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6371694485 + ... + 6371694494.

It is an arithmetic number, because the mean of its divisors is an integer number (19115083470).

Almost surely, 2^63716944895 is an apocalyptic number.

63716944895 is a deficient number, since it is larger than the sum of its proper divisors (12743388985).

63716944895 is a wasteful number, since it uses less digits than its factorization.

63716944895 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12743388984.

The product of its digits is 39191040, while the sum is 62.

The spelling of 63716944895 in words is "sixty-three billion, seven hundred sixteen million, nine hundred forty-four thousand, eight hundred ninety-five".