68655255686 has 16 divisors (see below), whose sum is σ = 103232102400. Its totient is φ = 34244614728.

The previous prime is 68655255629. The next prime is 68655255689.

It is a happy number.

68655255686 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 (68655255689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2540795 + ... + 2567673.

It is an arithmetic number, because the mean of its divisors is an integer number (6452006400).

Almost surely, 2^68655255686 is an apocalyptic number.

68655255686 is a deficient number, since it is larger than the sum of its proper divisors (34576846714).

68655255686 is a wasteful number, since it uses less digits than its factorization.

68655255686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29923.

The product of its digits is 103680000, while the sum is 62.

The spelling of 68655255686 in words is "sixty-eight billion, six hundred fifty-five million, two hundred fifty-five thousand, six hundred eighty-six".