68647911974686 has 16 divisors (see below), whose sum is σ = 112344901334640. Its totient is φ = 31200275666880.

The previous prime is 68647911974651. The next prime is 68647911974689.

It is a happy number.

68647911974686 is nontrivially palindromic in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68647911974689) 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, 165822831 + ... + 166236298.

It is an arithmetic number, because the mean of its divisors is an integer number (7021556333415).

Almost surely, 2^{68647911974686} is an apocalyptic number.

68647911974686 is a deficient number, since it is larger than the sum of its proper divisors (43696989359954).

68647911974686 is a wasteful number, since it uses less digits than its factorization.

68647911974686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332068539.

The product of its digits is 5267275776, while the sum is 82.

The spelling of 68647911974686 in words is "sixty-eight trillion, six hundred forty-seven billion, nine hundred eleven million, nine hundred seventy-four thousand, six hundred eighty-six".