6565748266 has 16 divisors (see below), whose sum is σ = 12278802240. Its totient is φ = 2558083680.

The previous prime is 6565748263. The next prime is 6565748297. The reversal of 6565748266 is 6628475656.

It is not an unprimeable number, because it can be changed into a prime (6565748263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21317211 + ... + 21317518.

It is an arithmetic number, because the mean of its divisors is an integer number (767425140).

Almost surely, 2^6565748266 is an apocalyptic number.

6565748266 is a deficient number, since it is larger than the sum of its proper divisors (5713053974).

6565748266 is a wasteful number, since it uses less digits than its factorization.

6565748266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42634749.

The product of its digits is 14515200, while the sum is 55.

The square root of 6565748266 is about 81029.3049828270. The cubic root of 6565748266 is about 1872.5269455298.

The spelling of 6565748266 in words is "six billion, five hundred sixty-five million, seven hundred forty-eight thousand, two hundred sixty-six".