68320936563 has 32 divisors (see below), whose sum is σ = 102232660992. Its totient is φ = 40220064000.

The previous prime is 68320936543. The next prime is 68320936627. The reversal of 68320936563 is 36563902386.

It is not a de Polignac number, because 68320936563 - 2¹⁰ = 68320935539 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68320936543) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 687270 + ... + 780372.

It is an arithmetic number, because the mean of its divisors is an integer number (3194770656).

Almost surely, 2^68320936563 is an apocalyptic number.

68320936563 is a deficient number, since it is larger than the sum of its proper divisors (33911724429).

68320936563 is a wasteful number, since it uses less digits than its factorization.

68320936563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93755.

The product of its (nonzero) digits is 4199040, while the sum is 51.

The spelling of 68320936563 in words is "sixty-eight billion, three hundred twenty million, nine hundred thirty-six thousand, five hundred sixty-three".