6566163311 has 4 divisors (see below), whose sum is σ = 6576127800. Its totient is φ = 6556198824.

The previous prime is 6566163293. The next prime is 6566163313. The reversal of 6566163311 is 1133616656.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6566163311 is a prime.

It is a super-2 number, since 2×6566163311² = 86229001253444965442, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6566163313) 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, 4981256 + ... + 4982573.

It is an arithmetic number, because the mean of its divisors is an integer number (1644031950).

Almost surely, 2^6566163311 is an apocalyptic number.

6566163311 is a deficient number, since it is larger than the sum of its proper divisors (9964489).

6566163311 is an equidigital number, since it uses as much as digits as its factorization.

6566163311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9964488.

The product of its digits is 58320, while the sum is 38.

The square root of 6566163311 is about 81031.8660219546. The cubic root of 6566163311 is about 1872.5664011277.

Adding to 6566163311 its reverse (1133616656), we get a palindrome (7699779967).

The spelling of 6566163311 in words is "six billion, five hundred sixty-six million, one hundred sixty-three thousand, three hundred eleven".