68708640064896 has 240 divisors, whose sum is σ = 221414628772260. Its totient is φ = 21141119480832.

The previous prime is 68708640064891. The next prime is 68708640064927. The reversal of 68708640064896 is 69846004680786.

68708640064896 is a `hidden beast` number, since 6 + 8 + 7 + 0 + 86 + 400 + 64 + 89 + 6 = 666.

68708640064896 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68708640064891) 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 29 ways as a sum of consecutive naturals, for example, 17854290 + ... + 21358673.

Almost surely, 2^{68708640064896} is an apocalyptic number.

It is an amenable number.

68708640064896 is an abundant number, since it is smaller than the sum of its proper divisors (152705988707364).

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

68708640064896 is a wasteful number, since it uses less digits than its factorization.

68708640064896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39213015 (or 39212981 counting only the distinct ones).

The product of its (nonzero) digits is 668860416, while the sum is 72.

The spelling of 68708640064896 in words is "sixty-eight trillion, seven hundred eight billion, six hundred forty million, sixty-four thousand, eight hundred ninety-six".