68391618047 has 8 divisors (see below), whose sum is σ = 68745283200. Its totient is φ = 68038412824.

The previous prime is 68391618013. The next prime is 68391618059. The reversal of 68391618047 is 74081619386.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 68391618047 - 2¹⁶ = 68391552511 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 68391618047.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68391618247) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 185204 + ... + 413622.

It is an arithmetic number, because the mean of its divisors is an integer number (8593160400).

Almost surely, 2^68391618047 is an apocalyptic number.

68391618047 is a deficient number, since it is larger than the sum of its proper divisors (353665153).

68391618047 is a wasteful number, since it uses less digits than its factorization.

68391618047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229965.

The product of its (nonzero) digits is 1741824, while the sum is 53.

The spelling of 68391618047 in words is "sixty-eight billion, three hundred ninety-one million, six hundred eighteen thousand, forty-seven".