67786816568 has 32 divisors (see below), whose sum is σ = 129232680960. Its totient is φ = 33325188480.

The previous prime is 67786816543. The next prime is 67786816579. The reversal of 67786816568 is 86561868776.

67786816568 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 67786816498 and 67786816507.

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, 1340105 + ... + 1389767.

It is an arithmetic number, because the mean of its divisors is an integer number (4038521280).

Almost surely, 2^67786816568 is an apocalyptic number.

It is an amenable number.

67786816568 is a deficient number, since it is larger than the sum of its proper divisors (61445864392).

67786816568 is a wasteful number, since it uses less digits than its factorization.

67786816568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52527 (or 52523 counting only the distinct ones).

The product of its digits is 162570240, while the sum is 68.

The spelling of 67786816568 in words is "sixty-seven billion, seven hundred eighty-six million, eight hundred sixteen thousand, five hundred sixty-eight".