68543717488 has 20 divisors (see below), whose sum is σ = 132822916200. Its totient is φ = 34266835904.

The previous prime is 68543717479. The next prime is 68543717519. The reversal of 68543717488 is 88471734586.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 200095 + ... + 420862.

It is an arithmetic number, because the mean of its divisors is an integer number (6641145810).

Almost surely, 2^68543717488 is an apocalyptic number.

It is an amenable number.

68543717488 is a deficient number, since it is larger than the sum of its proper divisors (64279198712).

68543717488 is a wasteful number, since it uses less digits than its factorization.

68543717488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 627864 (or 627858 counting only the distinct ones).

The product of its digits is 36126720, while the sum is 61.

The spelling of 68543717488 in words is "sixty-eight billion, five hundred forty-three million, seven hundred seventeen thousand, four hundred eighty-eight".