9871560020 has 192 divisors, whose sum is σ = 25035816960. Its totient is φ = 3198873600.

The previous prime is 9871560007. The next prime is 9871560059. The reversal of 9871560020 is 200651789.

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 63 ways as a sum of consecutive naturals, for example, 55148291 + ... + 55148469.

It is an arithmetic number, because the mean of its divisors is an integer number (130394880).

Almost surely, 2^9871560020 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 9871560020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12517908480).

9871560020 is an abundant number, since it is smaller than the sum of its proper divisors (15164256940).

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

9871560020 is a wasteful number, since it uses less digits than its factorization.

9871560020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 454 (or 452 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 38.

The square root of 9871560020 is about 99355.7246463434. The cubic root of 9871560020 is about 2145.1710638165.

The spelling of 9871560020 in words is "nine billion, eight hundred seventy-one million, five hundred sixty thousand, twenty".