9718424065 has 12 divisors (see below), whose sum is σ = 13566126996. Its totient is φ = 6664062048.

The previous prime is 9718424041. The next prime is 9718424069. The reversal of 9718424065 is 5604248179.

It can be written as a sum of positive squares in 2 ways, for example, as 5454856449 + 4263567616 = 73857^2 + 65296^2 .

It is not a de Polignac number, because 9718424065 - 2¹⁹ = 9717899777 is a prime.

It is a super-2 number, since 2×9718424065² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9718424069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19833274 + ... + 19833763.

It is an arithmetic number, because the mean of its divisors is an integer number (1130510583).

Almost surely, 2^9718424065 is an apocalyptic number.

It is an amenable number.

9718424065 is a deficient number, since it is larger than the sum of its proper divisors (3847702931).

9718424065 is a wasteful number, since it uses less digits than its factorization.

9718424065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39667056 (or 39667049 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 46.

The square root of 9718424065 is about 98582.0676644591. The cubic root of 9718424065 is about 2134.0206383397.

The spelling of 9718424065 in words is "nine billion, seven hundred eighteen million, four hundred twenty-four thousand, sixty-five".