6681110784 has 72 divisors (see below), whose sum is σ = 17911572000. Its totient is φ = 2210746368.

The previous prime is 6681110773. The next prime is 6681110791. The reversal of 6681110784 is 4870111866.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73467 + ... + 136965.

Almost surely, 2^6681110784 is an apocalyptic number.

6681110784 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6681110784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8955786000).

6681110784 is an abundant number, since it is smaller than the sum of its proper divisors (11230461216).

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

6681110784 is a wasteful number, since it uses less digits than its factorization.

6681110784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63655 (or 63641 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 42.

The square root of 6681110784 is about 81738.0620274300. The cubic root of 6681110784 is about 1883.4303207699.

The spelling of 6681110784 in words is "six billion, six hundred eighty-one million, one hundred ten thousand, seven hundred eighty-four".