68868288668 has 24 divisors (see below), whose sum is σ = 134325147600. Its totient is φ = 30702889728.

The previous prime is 68868288659. The next prime is 68868288673. The reversal of 68868288668 is 86688286886.

It is a junction number, because it is equal to n+sod(n) for n = 68868288595 and 68868288604.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26650523 + ... + 26653106.

It is an arithmetic number, because the mean of its divisors is an integer number (5596881150).

Almost surely, 2^68868288668 is an apocalyptic number.

68868288668 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

68868288668 is a deficient number, since it is larger than the sum of its proper divisors (65456858932).

68868288668 is a wasteful number, since it uses less digits than its factorization.

68868288668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53303669 (or 53303667 counting only the distinct ones).

The product of its digits is 679477248, while the sum is 74.

The spelling of 68868288668 in words is "sixty-eight billion, eight hundred sixty-eight million, two hundred eighty-eight thousand, six hundred sixty-eight".