6805878081056 has 24 divisors (see below), whose sum is σ = 13399472934540. Its totient is φ = 3402837335808.

The previous prime is 6805878081053. The next prime is 6805878081137. The reversal of 6805878081056 is 6501808785086.

It can be written as a sum of positive squares in 2 ways, for example, as 6361069117456 + 444808963600 = 2522116^2 + 666940^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 6805878081056.

It is not an unprimeable number, because it can be changed into a prime (6805878081053) 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 3 ways as a sum of consecutive naturals, for example, 2085071 + ... + 4237838.

Almost surely, 2^{6805878081056} is an apocalyptic number.

It is an amenable number.

6805878081056 is a deficient number, since it is larger than the sum of its proper divisors (6593594853484).

6805878081056 is a wasteful number, since it uses less digits than its factorization.

6805878081056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6356556 (or 6356548 counting only the distinct ones).

The product of its (nonzero) digits is 25804800, while the sum is 62.

The spelling of 6805878081056 in words is "six trillion, eight hundred five billion, eight hundred seventy-eight million, eighty-one thousand, fifty-six".