9618391605760 has 720 divisors, whose sum is σ = 28125485632728. Its totient is φ = 3144758722560.

The previous prime is 9618391605751. The next prime is 9618391605847. The reversal of 9618391605760 is 675061938169.

It can be written as a sum of positive squares in 4 ways, for example, as 9527148945664 + 91242660096 = 3086608^2 + 302064^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 8799991774 + ... + 8799992866.

Almost surely, 2^{9618391605760} 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 9618391605760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14062742816364).

9618391605760 is an abundant number, since it is smaller than the sum of its proper divisors (18507094026968).

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

9618391605760 is a wasteful number, since it uses less digits than its factorization.

9618391605760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1265 (or 1211 counting only the distinct ones).

The product of its (nonzero) digits is 14696640, while the sum is 61.

The spelling of 9618391605760 in words is "nine trillion, six hundred eighteen billion, three hundred ninety-one million, six hundred five thousand, seven hundred sixty".