6565555964113 has 2 divisors, whose sum is σ = 6565555964114. Its totient is φ = 6565555964112.

The previous prime is 6565555964111. The next prime is 6565555964119. The reversal of 6565555964113 is 3114695555656.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5531494759569 + 1034061204544 = 2351913^2 + 1016888^2 .

It is a cyclic number.

It is not a de Polignac number, because 6565555964113 - 2¹ = 6565555964111 is a prime.

Together with 6565555964111, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (6565555964111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3282777982056 + 3282777982057.

It is an arithmetic number, because the mean of its divisors is an integer number (3282777982057).

Almost surely, 2^{6565555964113} is an apocalyptic number.

It is an amenable number.

6565555964113 is a deficient number, since it is larger than the sum of its proper divisors (1).

6565555964113 is an equidigital number, since it uses as much as digits as its factorization.

6565555964113 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72900000, while the sum is 61.

The spelling of 6565555964113 in words is "six trillion, five hundred sixty-five billion, five hundred fifty-five million, nine hundred sixty-four thousand, one hundred thirteen".