9861873012 has 96 divisors (see below), whose sum is σ = 27539635200. Its totient is φ = 3041823456.

The previous prime is 9861872987. The next prime is 9861873017. The reversal of 9861873012 is 2103781689.

9861873012 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9861873017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 32353 + ... + 144119.

It is an arithmetic number, because the mean of its divisors is an integer number (286871200).

Almost surely, 2^9861873012 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 9861873012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13769817600).

9861873012 is an abundant number, since it is smaller than the sum of its proper divisors (17677762188).

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

9861873012 is a wasteful number, since it uses less digits than its factorization.

9861873012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111842 (or 111834 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The square root of 9861873012 is about 99306.9635624814. The cubic root of 9861873012 is about 2144.4691453697.

The spelling of 9861873012 in words is "nine billion, eight hundred sixty-one million, eight hundred seventy-three thousand, twelve".