9998841339744 has 384 divisors, whose sum is σ = 29128411275264. Its totient is φ = 2989142016000.

The previous prime is 9998841339737. The next prime is 9998841339793. The reversal of 9998841339744 is 4479331488999.

It is a self number, because there is not a number n which added to its sum of digits gives 9998841339744.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4242188614 + ... + 4242190970.

It is an arithmetic number, because the mean of its divisors is an integer number (75855237696).

Almost surely, 2^{9998841339744} 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 9998841339744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14564205637632).

9998841339744 is an abundant number, since it is smaller than the sum of its proper divisors (19129569935520).

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

9998841339744 is a wasteful number, since it uses less digits than its factorization.

9998841339744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3670 (or 3662 counting only the distinct ones).

The product of its digits is 1693052928, while the sum is 78.

The spelling of 9998841339744 in words is "nine trillion, nine hundred ninety-eight billion, eight hundred forty-one million, three hundred thirty-nine thousand, seven hundred forty-four".