6563655413 has 4 divisors (see below), whose sum is σ = 7501320480. Its totient is φ = 5625990348.

The previous prime is 6563655401. The next prime is 6563655433. The reversal of 6563655413 is 3145563656.

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 6563655413 - 2¹² = 6563651317 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6563655433) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 468832523 + ... + 468832536.

It is an arithmetic number, because the mean of its divisors is an integer number (1875330120).

Almost surely, 2^6563655413 is an apocalyptic number.

It is an amenable number.

6563655413 is a deficient number, since it is larger than the sum of its proper divisors (937665067).

6563655413 is an equidigital number, since it uses as much as digits as its factorization.

6563655413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 937665066.

The product of its digits is 972000, while the sum is 44.

The square root of 6563655413 is about 81016.3897800933. The cubic root of 6563655413 is about 1872.3279664269.

The spelling of 6563655413 in words is "six billion, five hundred sixty-three million, six hundred fifty-five thousand, four hundred thirteen".