6563445401 has 4 divisors (see below), whose sum is σ = 6563754192. Its totient is φ = 6563136612.

The previous prime is 6563445397. The next prime is 6563445419. The reversal of 6563445401 is 1045443656.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6563445401 - 2² = 6563445397 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6563445461) 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, 119951 + ... + 165876.

It is an arithmetic number, because the mean of its divisors is an integer number (1640938548).

Almost surely, 2^6563445401 is an apocalyptic number.

It is an amenable number.

6563445401 is a deficient number, since it is larger than the sum of its proper divisors (308791).

6563445401 is a wasteful number, since it uses less digits than its factorization.

6563445401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 308790.

The product of its (nonzero) digits is 172800, while the sum is 38.

The square root of 6563445401 is about 81015.0936616135. The cubic root of 6563445401 is about 1872.3079970902.

The spelling of 6563445401 in words is "six billion, five hundred sixty-three million, four hundred forty-five thousand, four hundred one".