9997581216392 has 96 divisors (see below), whose sum is σ = 23553085167360. Its totient is φ = 3894323980800.

The previous prime is 9997581216361. The next prime is 9997581216431. The reversal of 9997581216392 is 2936121857999.

9997581216392 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31833233 + ... + 32145759.

It is an arithmetic number, because the mean of its divisors is an integer number (245344637160).

Almost surely, 2^{9997581216392} 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 9997581216392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11776542583680).

9997581216392 is an abundant number, since it is smaller than the sum of its proper divisors (13555503950968).

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

9997581216392 is a wasteful number, since it uses less digits than its factorization.

9997581216392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317283 (or 317268 counting only the distinct ones).

The product of its digits is 132269760, while the sum is 71.

The spelling of 9997581216392 in words is "nine trillion, nine hundred ninety-seven billion, five hundred eighty-one million, two hundred sixteen thousand, three hundred ninety-two".