68061867868 has 12 divisors (see below), whose sum is σ = 125377125160. Its totient is φ = 32239832112.

The previous prime is 68061867851. The next prime is 68061867871. The reversal of 68061867868 is 86876816086.

It is a hoax number, since the sum of its digits (64) coincides with the sum of the digits of its distinct 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, 447775371 + ... + 447775522.

Almost surely, 2^68061867868 is an apocalyptic number.

It is an amenable number.

68061867868 is a deficient number, since it is larger than the sum of its proper divisors (57315257292).

68061867868 is a wasteful number, since it uses less digits than its factorization.

68061867868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 895550916 (or 895550914 counting only the distinct ones).

The product of its (nonzero) digits is 37158912, while the sum is 64.

The spelling of 68061867868 in words is "sixty-eight billion, sixty-one million, eight hundred sixty-seven thousand, eight hundred sixty-eight".