9631321048320 has 576 divisors, whose sum is σ = 32990425687296. Its totient is φ = 2386226053120.

The previous prime is 9631321048289. The next prime is 9631321048369. The reversal of 9631321048320 is 238401231369.

It is a congruent number.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 1684678102 + ... + 1684683818.

It is an arithmetic number, because the mean of its divisors is an integer number (57275044596).

Almost surely, 2^{9631321048320} 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 9631321048320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16495212843648).

9631321048320 is an abundant number, since it is smaller than the sum of its proper divisors (23359104638976).

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

9631321048320 is a wasteful number, since it uses less digits than its factorization.

9631321048320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6086 (or 6072 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 42.

Adding to 9631321048320 its reverse (238401231369), we get a palindrome (9869722279689).

The spelling of 9631321048320 in words is "nine trillion, six hundred thirty-one billion, three hundred twenty-one million, forty-eight thousand, three hundred twenty".