6564843117 has 12 divisors (see below), whose sum is σ = 10837201440. Its totient is φ = 3751338888.

The previous prime is 6564843113. The next prime is 6564843127. The reversal of 6564843117 is 7113484656.

6564843117 is a `hidden beast` number, since 6 + 56 + 484 + 3 + 117 = 666.

It is not a de Polignac number, because 6564843117 - 2² = 6564843113 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6564843113) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 52101867 + ... + 52101992.

It is an arithmetic number, because the mean of its divisors is an integer number (903100120).

Almost surely, 2^6564843117 is an apocalyptic number.

It is an amenable number.

6564843117 is a deficient number, since it is larger than the sum of its proper divisors (4272358323).

6564843117 is a wasteful number, since it uses less digits than its factorization.

6564843117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104203872 (or 104203869 counting only the distinct ones).

The product of its digits is 483840, while the sum is 45.

The square root of 6564843117 is about 81023.7194715227. The cubic root of 6564843117 is about 1872.4408932010.

The spelling of 6564843117 in words is "six billion, five hundred sixty-four million, eight hundred forty-three thousand, one hundred seventeen".