6686680668080 has 40 divisors (see below), whose sum is σ = 17767465776672. Its totient is φ = 2292576228864.

The previous prime is 6686680668047. The next prime is 6686680668163. The reversal of 6686680668080 is 808660866866.

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 6686680668080.

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 7 ways as a sum of consecutive naturals, for example, 5970250037 + ... + 5970251156.

Almost surely, 2^{6686680668080} is an apocalyptic number.

It is an amenable number.

6686680668080 is an abundant number, since it is smaller than the sum of its proper divisors (11080785108592).

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

6686680668080 is a wasteful number, since it uses less digits than its factorization.

6686680668080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11940501213 (or 11940501207 counting only the distinct ones).

The product of its (nonzero) digits is 191102976, while the sum is 68.

The spelling of 6686680668080 in words is "six trillion, six hundred eighty-six billion, six hundred eighty million, six hundred sixty-eight thousand, eighty".