68778583545752 has 16 divisors (see below), whose sum is σ = 128960886032160. Its totient is φ = 34389013937184.

The previous prime is 68778583545733. The next prime is 68778583545773. The reversal of 68778583545752 is 25754538587786.

68778583545752 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (80) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 33675488 + ... + 35659439.

It is an arithmetic number, because the mean of its divisors is an integer number (8060055377010).

Almost surely, 2^{68778583545752} is an apocalyptic number.

It is an amenable number.

68778583545752 is a deficient number, since it is larger than the sum of its proper divisors (60182302486408).

68778583545752 is a wasteful number, since it uses less digits than its factorization.

68778583545752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69458930 (or 69458926 counting only the distinct ones).

The product of its digits is 15805440000, while the sum is 80.

The spelling of 68778583545752 in words is "sixty-eight trillion, seven hundred seventy-eight billion, five hundred eighty-three million, five hundred forty-five thousand, seven hundred fifty-two".