9997818432 has 112 divisors (see below), whose sum is σ = 31206838272. Its totient is φ = 2764362240.

The previous prime is 9997818419. The next prime is 9997818451. The reversal of 9997818432 is 2348187999.

It is a tau number, because it is divible by the number of its divisors (112).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78318 + ... + 161645.

Almost surely, 2^9997818432 is an apocalyptic number.

It is an amenable number.

9997818432 is an abundant number, since it is smaller than the sum of its proper divisors (21209019840).

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

9997818432 is a wasteful number, since it uses less digits than its factorization.

9997818432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240016 (or 240006 counting only the distinct ones).

The product of its digits is 7838208, while the sum is 60.

The square root of 9997818432 is about 99989.0915650302. The cubic root of 9997818432 is about 2154.2780104452.

The spelling of 9997818432 in words is "nine billion, nine hundred ninety-seven million, eight hundred eighteen thousand, four hundred thirty-two".