6565645093 has 12 divisors (see below), whose sum is σ = 7883962752. Its totient is φ = 5446155960.

The previous prime is 6565645091. The next prime is 6565645109. The reversal of 6565645093 is 3905465656.

It is not a de Polignac number, because 6565645093 - 2¹ = 6565645091 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6565645091) 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, 2159655 + ... + 2162692.

It is an arithmetic number, because the mean of its divisors is an integer number (656996896).

Almost surely, 2^6565645093 is an apocalyptic number.

It is an amenable number.

6565645093 is a deficient number, since it is larger than the sum of its proper divisors (1318317659).

6565645093 is a wasteful number, since it uses less digits than its factorization.

6565645093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4322392 (or 4322385 counting only the distinct ones).

The product of its (nonzero) digits is 2916000, while the sum is 49.

The square root of 6565645093 is about 81028.6683402856. The cubic root of 6565645093 is about 1872.5171372933.

The spelling of 6565645093 in words is "six billion, five hundred sixty-five million, six hundred forty-five thousand, ninety-three".