68216544832 has 28 divisors (see below), whose sum is σ = 135534223216. Its totient is φ = 34066189440.

The previous prime is 68216544779. The next prime is 68216544839. The reversal of 68216544832 is 23844561286.

It is not an unprimeable number, because it can be changed into a prime (68216544839) by changing a digit.

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, 605238 + ... + 709045.

It is an arithmetic number, because the mean of its divisors is an integer number (4840507972).

Almost surely, 2^68216544832 is an apocalyptic number.

It is an amenable number.

68216544832 is a deficient number, since it is larger than the sum of its proper divisors (67317678384).

68216544832 is a wasteful number, since it uses less digits than its factorization.

68216544832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1315106 (or 1315096 counting only the distinct ones).

The product of its digits is 2211840, while the sum is 49.

The spelling of 68216544832 in words is "sixty-eight billion, two hundred sixteen million, five hundred forty-four thousand, eight hundred thirty-two".