6561116322 has 8 divisors (see below), whose sum is σ = 13122232656. Its totient is φ = 2187038772.

The previous prime is 6561116297. The next prime is 6561116333. The reversal of 6561116322 is 2236111656.

It is a sphenic number, since it is the product of 3 distinct primes.

6561116322 is an admirable number.

It is a super-3 number, since 3×6561116322³ (a number of 30 digits) contains 333 as substring.

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 3 ways as a sum of consecutive naturals, for example, 546759688 + ... + 546759699.

It is an arithmetic number, because the mean of its divisors is an integer number (1640279082).

Almost surely, 2^6561116322 is an apocalyptic number.

6561116322 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

6561116322 is a wasteful number, since it uses less digits than its factorization.

6561116322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1093519392.

The product of its digits is 12960, while the sum is 33.

The square root of 6561116322 is about 81000.7180338545. The cubic root of 6561116322 is about 1872.0865042163.

Adding to 6561116322 its reverse (2236111656), we get a palindrome (8797227978).

The spelling of 6561116322 in words is "six billion, five hundred sixty-one million, one hundred sixteen thousand, three hundred twenty-two".