9598128019920 has 320 divisors, whose sum is σ = 36098489548800. Its totient is φ = 2324703029760.

The previous prime is 9598128019891. The next prime is 9598128019979. The reversal of 9598128019920 is 299108218959.

It is a happy number.

9598128019920 is a `hidden beast` number, since 9 + 598 + 1 + 2 + 8 + 0 + 19 + 9 + 20 = 666.

It is a super-2 number, since 2×9598128019920² (a number of 27 digits) contains 22 as substring.

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, 26024161 + ... + 26390399.

It is an arithmetic number, because the mean of its divisors is an integer number (112807779840).

Almost surely, 2^{9598128019920} is an apocalyptic number.

9598128019920 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9598128019920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18049244774400).

9598128019920 is an abundant number, since it is smaller than the sum of its proper divisors (26500361528880).

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

9598128019920 is a wasteful number, since it uses less digits than its factorization.

9598128019920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 367375 (or 367363 counting only the distinct ones).

The product of its (nonzero) digits is 8398080, while the sum is 63.

The spelling of 9598128019920 in words is "nine trillion, five hundred ninety-eight billion, one hundred twenty-eight million, nineteen thousand, nine hundred twenty".