9987841080 has 640 divisors, whose sum is σ = 41098337280. Its totient is φ = 2125854720.

The previous prime is 9987841067. The next prime is 9987841081. The reversal of 9987841080 is 801487899.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9987841081) by changing a digit.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 21387007 + ... + 21387473.

It is an arithmetic number, because the mean of its divisors is an integer number (64216152).

Almost surely, 2^9987841080 is an apocalyptic number.

9987841080 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 9987841080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20549168640).

9987841080 is an abundant number, since it is smaller than the sum of its proper divisors (31110496200).

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

9987841080 is a wasteful number, since it uses less digits than its factorization.

9987841080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 561 (or 548 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 54.

The square root of 9987841080 is about 99939.1869088397. The cubic root of 9987841080 is about 2153.5611492577.

The spelling of 9987841080 in words is "nine billion, nine hundred eighty-seven million, eight hundred forty-one thousand, eighty".