6543798912 has 384 divisors, whose sum is σ = 22374817920. Its totient is φ = 1797120000.

The previous prime is 6543798887. The next prime is 6543798917. The reversal of 6543798912 is 2198973456.

6543798912 is a `hidden beast` number, since 6 + 543 + 7 + 9 + 8 + 91 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (384).

It is not an unprimeable number, because it can be changed into a prime (6543798917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 26070787 + ... + 26071037.

It is an arithmetic number, because the mean of its divisors is an integer number (58267755).

Almost surely, 2^6543798912 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 6543798912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11187408960).

6543798912 is an abundant number, since it is smaller than the sum of its proper divisors (15831019008).

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

6543798912 is a wasteful number, since it uses less digits than its factorization.

6543798912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 392 (or 377 counting only the distinct ones).

The product of its digits is 3265920, while the sum is 54.

The square root of 6543798912 is about 80893.7507598702. The cubic root of 6543798912 is about 1870.4379913365.

The spelling of 6543798912 in words is "six billion, five hundred forty-three million, seven hundred ninety-eight thousand, nine hundred twelve".