6681418912 has 36 divisors (see below), whose sum is σ = 15301646010. Its totient is φ = 2863464576.

The previous prime is 6681418859. The next prime is 6681418927. The reversal of 6681418912 is 2198141866.

It can be written as a sum of positive squares in only one way, i.e., 6336796816 + 344622096 = 79604^2 + 18564^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2128987 + ... + 2132122.

Almost surely, 2^6681418912 is an apocalyptic number.

It is an amenable number.

6681418912 is an abundant number, since it is smaller than the sum of its proper divisors (8620227098).

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

6681418912 is a wasteful number, since it uses less digits than its factorization.

6681418912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4261133 (or 4261118 counting only the distinct ones).

The product of its digits is 165888, while the sum is 46.

The square root of 6681418912 is about 81739.9468558672. The cubic root of 6681418912 is about 1883.4592744732.

The spelling of 6681418912 in words is "six billion, six hundred eighty-one million, four hundred eighteen thousand, nine hundred twelve".