6680018181920 has 24 divisors (see below), whose sum is σ = 15781542955164. Its totient is φ = 2672007272704.

The previous prime is 6680018181919. The next prime is 6680018181989. The reversal of 6680018181920 is 291818100866.

It can be written as a sum of positive squares in 2 ways, for example, as 6470938790416 + 209079391504 = 2543804^2 + 457252^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20875056659 + ... + 20875056978.

Almost surely, 2^{6680018181920} is an apocalyptic number.

It is an amenable number.

6680018181920 is an abundant number, since it is smaller than the sum of its proper divisors (9101524773244).

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

6680018181920 is a wasteful number, since it uses less digits than its factorization.

6680018181920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41750113652 (or 41750113644 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 50.

The spelling of 6680018181920 in words is "six trillion, six hundred eighty billion, eighteen million, one hundred eighty-one thousand, nine hundred twenty".