68863693992864 has 192 divisors, whose sum is σ = 196529482638720. Its totient is φ = 21101864448000.

The previous prime is 68863693992859. The next prime is 68863693992901. The reversal of 68863693992864 is 46829939636886.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18583114 + ... + 21978614.

It is an arithmetic number, because the mean of its divisors is an integer number (1023591055410).

Almost surely, 2^{68863693992864} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68863693992864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98264741319360).

68863693992864 is an abundant number, since it is smaller than the sum of its proper divisors (127665788645856).

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

68863693992864 is a wasteful number, since it uses less digits than its factorization.

68863693992864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3395608 (or 3395566 counting only the distinct ones).

The product of its digits is 34828517376, while the sum is 87.

The spelling of 68863693992864 in words is "sixty-eight trillion, eight hundred sixty-three billion, six hundred ninety-three million, nine hundred ninety-two thousand, eight hundred sixty-four".