68368927109 has 16 divisors (see below), whose sum is σ = 78261456000. Its totient is φ = 58507873344.

The previous prime is 68368927093. The next prime is 68368927129. The reversal of 68368927109 is 90172986386.

It is a cyclic number.

It is not a de Polignac number, because 68368927109 - 2⁴ = 68368927093 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68368927129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15027167 + ... + 15031715.

It is an arithmetic number, because the mean of its divisors is an integer number (4891341000).

Almost surely, 2^68368927109 is an apocalyptic number.

It is an amenable number.

68368927109 is a deficient number, since it is larger than the sum of its proper divisors (9892528891).

68368927109 is a wasteful number, since it uses less digits than its factorization.

68368927109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7532.

The product of its (nonzero) digits is 7838208, while the sum is 59.

The spelling of 68368927109 in words is "sixty-eight billion, three hundred sixty-eight million, nine hundred twenty-seven thousand, one hundred nine".