9943312255872 has 128 divisors (see below), whose sum is σ = 27048861480960. Its totient is φ = 3234637443072.

The previous prime is 9943312255837. The next prime is 9943312255873. The reversal of 9943312255872 is 2785522133499.

It is a tau number, because it is divible by the number of its divisors (128).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9943312255873) 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 15 ways as a sum of consecutive naturals, for example, 19446433 + ... + 19951199.

It is an arithmetic number, because the mean of its divisors is an integer number (211319230320).

Almost surely, 2^{9943312255872} 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 9943312255872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13524430740480).

9943312255872 is an abundant number, since it is smaller than the sum of its proper divisors (17105549225088).

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

9943312255872 is a wasteful number, since it uses less digits than its factorization.

9943312255872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 506020 (or 506008 counting only the distinct ones).

The product of its digits is 32659200, while the sum is 60.

The spelling of 9943312255872 in words is "nine trillion, nine hundred forty-three billion, three hundred twelve million, two hundred fifty-five thousand, eight hundred seventy-two".