6561041445 has 96 divisors (see below), whose sum is σ = 13609411200. Its totient is φ = 2990276352.

The previous prime is 6561041423. The next prime is 6561041447. The reversal of 6561041445 is 5441401656.

It is not a de Polignac number, because 6561041445 - 2⁸ = 6561041189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6561041447) by changing a digit.

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 95 ways as a sum of consecutive naturals, for example, 2505777 + ... + 2508393.

It is an arithmetic number, because the mean of its divisors is an integer number (141764700).

Almost surely, 2^6561041445 is an apocalyptic number.

It is an amenable number.

6561041445 is an abundant number, since it is smaller than the sum of its proper divisors (7048369755).

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

6561041445 is a wasteful number, since it uses less digits than its factorization.

6561041445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3024 (or 3011 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

The square root of 6561041445 is about 81000.2558329293. The cubic root of 6561041445 is about 1872.0793826257.

The spelling of 6561041445 in words is "six billion, five hundred sixty-one million, forty-one thousand, four hundred forty-five".