9987843528180 has 144 divisors (see below), whose sum is σ = 36661261029120. Its totient is φ = 2148645325824.

The previous prime is 9987843528127. The next prime is 9987843528191. The reversal of 9987843528180 is 818253487899.

9987843528180 is a `hidden beast` number, since 9 + 9 + 8 + 7 + 8 + 435 + 2 + 8 + 180 = 666.

It is a super-2 number, since 2×9987843528180² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 9987843528099 and 9987843528108.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 233121520 + ... + 233164359.

It is an arithmetic number, because the mean of its divisors is an integer number (254592090480).

Almost surely, 2^{9987843528180} is an apocalyptic number.

9987843528180 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

9987843528180 is an abundant number, since it is smaller than the sum of its proper divisors (26673417500940).

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

9987843528180 is a wasteful number, since it uses less digits than its factorization.

9987843528180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 466285918 (or 466285913 counting only the distinct ones).

The product of its (nonzero) digits is 278691840, while the sum is 72.

The spelling of 9987843528180 in words is "nine trillion, nine hundred eighty-seven billion, eight hundred forty-three million, five hundred twenty-eight thousand, one hundred eighty".