6563326401 has 10 divisors (see below), whose sum is σ = 9804475362. Its totient is φ = 4375550880.

The previous prime is 6563326397. The next prime is 6563326409. The reversal of 6563326401 is 1046233656.

6563326401 is a `hidden beast` number, since 6 + 5 + 6 + 3 + 3 + 2 + 640 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 4746521025 + 1816805376 = 68895^2 + 42624^2 .

It is not a de Polignac number, because 6563326401 - 2² = 6563326397 is a prime.

It is a super-2 number, since 2×6563326401² = 86154506892127225602, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6563326409) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 40514280 + ... + 40514441.

Almost surely, 2^6563326401 is an apocalyptic number.

It is an amenable number.

6563326401 is a deficient number, since it is larger than the sum of its proper divisors (3241148961).

6563326401 is an equidigital number, since it uses as much as digits as its factorization.

6563326401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81028733 (or 81028724 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 36.

The square root of 6563326401 is about 81014.3592272382. The cubic root of 6563326401 is about 1872.2966815902.

The spelling of 6563326401 in words is "six billion, five hundred sixty-three million, three hundred twenty-six thousand, four hundred one".