6816494412 has 240 divisors, whose sum is σ = 22403082240. Its totient is φ = 1759148928.

The previous prime is 6816494411. The next prime is 6816494413. The reversal of 6816494412 is 2144946186.

It is an interprime number because it is at equal distance from previous prime (6816494411) and next prime (6816494413).

It is not an unprimeable number, because it can be changed into a prime (6816494411) by changing a digit.

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 79 ways as a sum of consecutive naturals, for example, 1383289 + ... + 1388207.

It is an arithmetic number, because the mean of its divisors is an integer number (93346176).

Almost surely, 2^6816494412 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6816494412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11201541120).

6816494412 is an abundant number, since it is smaller than the sum of its proper divisors (15586587828).

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

6816494412 is a wasteful number, since it uses less digits than its factorization.

6816494412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5002 (or 4991 counting only the distinct ones).

The product of its digits is 331776, while the sum is 45.

The square root of 6816494412 is about 82562.0640003628. The cubic root of 6816494412 is about 1896.0670642037.

The spelling of 6816494412 in words is "six billion, eight hundred sixteen million, four hundred ninety-four thousand, four hundred twelve".