6881798784 has 256 divisors, whose sum is σ = 22184755200. Its totient is φ = 1846333440.

The previous prime is 6881798773. The next prime is 6881798827. The reversal of 6881798784 is 4878971886.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6485614 + ... + 6486674.

It is an arithmetic number, because the mean of its divisors is an integer number (86659200).

Almost surely, 2^6881798784 is an apocalyptic number.

6881798784 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 6881798784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11092377600).

6881798784 is an abundant number, since it is smaller than the sum of its proper divisors (15302956416).

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

6881798784 is a wasteful number, since it uses less digits than its factorization.

6881798784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1231 (or 1219 counting only the distinct ones).

The product of its digits is 43352064, while the sum is 66.

The square root of 6881798784 is about 82956.6078380740. The cubic root of 6881798784 is about 1902.1028227221.

The spelling of 6881798784 in words is "six billion, eight hundred eighty-one million, seven hundred ninety-eight thousand, seven hundred eighty-four".