68688804218 has 16 divisors (see below), whose sum is σ = 111954589440. Its totient is φ = 31487227200.

The previous prime is 68688804157. The next prime is 68688804251. The reversal of 68688804218 is 81240888686.

It is a Curzon 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, 29153663 + ... + 29156018.

It is an arithmetic number, because the mean of its divisors is an integer number (6997161840).

Almost surely, 2^68688804218 is an apocalyptic number.

68688804218 is a deficient number, since it is larger than the sum of its proper divisors (43265785222).

68688804218 is a wasteful number, since it uses less digits than its factorization.

68688804218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58309733.

The product of its (nonzero) digits is 9437184, while the sum is 59.

The spelling of 68688804218 in words is "sixty-eight billion, six hundred eighty-eight million, eight hundred four thousand, two hundred eighteen".