9718424064 has 200 divisors, whose sum is σ = 29343997980. Its totient is φ = 3201859584.

The previous prime is 9718424041. The next prime is 9718424069. The reversal of 9718424064 is 4604248179.

It can be written as a sum of positive squares in 2 ways, for example, as 8573278464 + 1145145600 = 92592^2 + 33840^2 .

It is a congruent number.

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

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3689692 + ... + 3692324.

Almost surely, 2^9718424064 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9718424064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14671998990).

9718424064 is an abundant number, since it is smaller than the sum of its proper divisors (19625573916).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9718424064 is an equidigital number, since it uses as much as digits as its factorization.

9718424064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2752 (or 2727 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 45.

The square root of 9718424064 is about 98582.0676593872. The cubic root of 9718424064 is about 2134.0206382665.

The spelling of 9718424064 in words is "nine billion, seven hundred eighteen million, four hundred twenty-four thousand, sixty-four".