6565237161 has 8 divisors (see below), whose sum is σ = 10004170944. Its totient is φ = 3751564080.

The previous prime is 6565237121. The next prime is 6565237171. The reversal of 6565237161 is 1617325656.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6565237161 - 2¹¹ = 6565235113 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6565237111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 156315150 + ... + 156315191.

It is an arithmetic number, because the mean of its divisors is an integer number (1250521368).

Almost surely, 2^6565237161 is an apocalyptic number.

It is an amenable number.

6565237161 is a deficient number, since it is larger than the sum of its proper divisors (3438933783).

6565237161 is a wasteful number, since it uses less digits than its factorization.

6565237161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312630351.

The product of its digits is 226800, while the sum is 42.

The square root of 6565237161 is about 81026.1510933353. The cubic root of 6565237161 is about 1872.4783558549.

The spelling of 6565237161 in words is "six billion, five hundred sixty-five million, two hundred thirty-seven thousand, one hundred sixty-one".