6560561161555 has 8 divisors (see below), whose sum is σ = 7872720108192. Its totient is φ = 5248417786368.

The previous prime is 6560561161519. The next prime is 6560561161589. The reversal of 6560561161555 is 5551611650656.

6560561161555 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 6560561161555 - 2¹⁷ = 6560561030483 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2944974 + ... + 4668403.

It is an arithmetic number, because the mean of its divisors is an integer number (984090013524).

Almost surely, 2^{6560561161555} is an apocalyptic number.

6560561161555 is a deficient number, since it is larger than the sum of its proper divisors (1312158946637).

6560561161555 is a wasteful number, since it uses less digits than its factorization.

6560561161555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7785725.

The product of its (nonzero) digits is 4050000, while the sum is 52.

The spelling of 6560561161555 in words is "six trillion, five hundred sixty billion, five hundred sixty-one million, one hundred sixty-one thousand, five hundred fifty-five".