68666266686 has 32 divisors (see below), whose sum is σ = 145427743008. Its totient is φ = 21539865600.

The previous prime is 68666266663. The next prime is 68666266693.

68666266686 is nontrivially palindromic in base 10.

It is a Smith number, since the sum of its digits (66) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 975906 + ... + 1043898.

It is an arithmetic number, because the mean of its divisors is an integer number (4544616969).

Almost surely, 2^68666266686 is an apocalyptic number.

68666266686 is an abundant number, since it is smaller than the sum of its proper divisors (76761476322).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68666266686 is a wasteful number, since it uses less digits than its factorization.

68666266686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77916.

The product of its digits is 214990848, while the sum is 66.

The spelling of 68666266686 in words is "sixty-eight billion, six hundred sixty-six million, two hundred sixty-six thousand, six hundred eighty-six".