9656518265 has 4 divisors (see below), whose sum is σ = 11587821924. Its totient is φ = 7725214608.

The previous prime is 9656518253. The next prime is 9656518273. The reversal of 9656518265 is 5628156569.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1931514601 + 7725003664 = 43949^2 + 87892^2 .

It is a cyclic number.

It is not a de Polignac number, because 9656518265 - 2¹² = 9656514169 is a prime.

It is a super-2 number, since 2×9656518265² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 965651822 + ... + 965651831.

It is an arithmetic number, because the mean of its divisors is an integer number (2896955481).

Almost surely, 2^9656518265 is an apocalyptic number.

It is an amenable number.

9656518265 is a deficient number, since it is larger than the sum of its proper divisors (1931303659).

9656518265 is a wasteful number, since it uses less digits than its factorization.

9656518265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1931303658.

The product of its digits is 3888000, while the sum is 53.

The square root of 9656518265 is about 98267.5850166269. The cubic root of 9656518265 is about 2129.4797869227.

The spelling of 9656518265 in words is "nine billion, six hundred fifty-six million, five hundred eighteen thousand, two hundred sixty-five".