68556665586 has 8 divisors (see below), whose sum is σ = 137113331184. Its totient is φ = 22852221860.

The previous prime is 68556665533. The next prime is 68556665587.

68556665586 is nontrivially palindromic in base 10.

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

68556665586 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (68556665587) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5713055460 + ... + 5713055471.

It is an arithmetic number, because the mean of its divisors is an integer number (17139166398).

Almost surely, 2^68556665586 is an apocalyptic number.

68556665586 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

68556665586 is a wasteful number, since it uses less digits than its factorization.

68556665586 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11426110936.

The product of its digits is 311040000, while the sum is 66.

The spelling of 68556665586 in words is "sixty-eight billion, five hundred fifty-six million, six hundred sixty-five thousand, five hundred eighty-six".