9840555520 has 160 divisors (see below), whose sum is σ = 25291113408. Its totient is φ = 3662512128.

The previous prime is 9840555511. The next prime is 9840555539. The reversal of 9840555520 is 255550489.

It is a tau number, because it is divible by the number of its divisors (160).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2176302 + ... + 2180818.

Almost surely, 2^9840555520 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 9840555520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12645556704).

9840555520 is an abundant number, since it is smaller than the sum of its proper divisors (15450557888).

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

9840555520 is a wasteful number, since it uses less digits than its factorization.

9840555520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4600 (or 4584 counting only the distinct ones).

The product of its (nonzero) digits is 360000, while the sum is 43.

The square root of 9840555520 is about 99199.5741926345. The cubic root of 9840555520 is about 2142.9228643039.

The spelling of 9840555520 in words is "nine billion, eight hundred forty million, five hundred fifty-five thousand, five hundred twenty".