68666874680 has 32 divisors (see below), whose sum is σ = 156676537440. Its totient is φ = 27079893120.

The previous prime is 68666874673. The next prime is 68666874697. The reversal of 68666874680 is 8647866686.

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, 12086399 + ... + 12092078.

It is an arithmetic number, because the mean of its divisors is an integer number (4896141795).

Almost surely, 2^68666874680 is an apocalyptic number.

It is an amenable number.

68666874680 is an abundant number, since it is smaller than the sum of its proper divisors (88009662760).

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

68666874680 is a wasteful number, since it uses less digits than its factorization.

68666874680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24178559 (or 24178555 counting only the distinct ones).

The product of its (nonzero) digits is 111476736, while the sum is 65.

The spelling of 68666874680 in words is "sixty-eight billion, six hundred sixty-six million, eight hundred seventy-four thousand, six hundred eighty".