68939366680 has 32 divisors (see below), whose sum is σ = 163277449200. Its totient is φ = 26124391296.

The previous prime is 68939366653. The next prime is 68939366701. The reversal of 68939366680 is 8666393986.

It is a Smith number, since the sum of its digits (64) coincides with the sum of the digits of its prime factors.

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, 45354087 + ... + 45355606.

Almost surely, 2^68939366680 is an apocalyptic number.

It is an amenable number.

68939366680 is an abundant number, since it is smaller than the sum of its proper divisors (94338082520).

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

68939366680 is a wasteful number, since it uses less digits than its factorization.

68939366680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90709723 (or 90709719 counting only the distinct ones).

The product of its (nonzero) digits is 60466176, while the sum is 64.

The spelling of 68939366680 in words is "sixty-eight billion, nine hundred thirty-nine million, three hundred sixty-six thousand, six hundred eighty".