63117646393768 has 16 divisors (see below), whose sum is σ = 118346775893280. Its totient is φ = 31558506155568.

The previous prime is 63117646393751. The next prime is 63117646393871. The reversal of 63117646393768 is 86739364671136.

It is a junction number, because it is equal to n+sod(n) for n = 63117646393697 and 63117646393706.

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, 38782996 + ... + 40377667.

It is an arithmetic number, because the mean of its divisors is an integer number (7396673493330).

Almost surely, 2^{63117646393768} is an apocalyptic number.

It is an amenable number.

63117646393768 is a deficient number, since it is larger than the sum of its proper divisors (55229129499512).

63117646393768 is a wasteful number, since it uses less digits than its factorization.

63117646393768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79260336 (or 79260332 counting only the distinct ones).

The product of its digits is 493807104, while the sum is 70.

The spelling of 63117646393768 in words is "sixty-three trillion, one hundred seventeen billion, six hundred forty-six million, three hundred ninety-three thousand, seven hundred sixty-eight".