68008066664 has 16 divisors (see below), whose sum is σ = 129676399200. Its totient is φ = 33427693552.

The previous prime is 68008066639. The next prime is 68008066667. The reversal of 68008066664 is 46666080086.

It is not an unprimeable number, because it can be changed into a prime (68008066667) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72041972 + ... + 72042915.

It is an arithmetic number, because the mean of its divisors is an integer number (8104774950).

Almost surely, 2^68008066664 is an apocalyptic number.

It is an amenable number.

68008066664 is a deficient number, since it is larger than the sum of its proper divisors (61668332536).

68008066664 is a wasteful number, since it uses less digits than its factorization.

68008066664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144084952 (or 144084948 counting only the distinct ones).

The product of its (nonzero) digits is 1990656, while the sum is 50.

The spelling of 68008066664 in words is "sixty-eight billion, eight million, sixty-six thousand, six hundred sixty-four".