9659389890432 has 256 divisors, whose sum is σ = 26783410544640. Its totient is φ = 3081007104000.

The previous prime is 9659389890379. The next prime is 9659389890503. The reversal of 9659389890432 is 2340989839569.

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 31 ways as a sum of consecutive naturals, for example, 579752182 + ... + 579768842.

It is an arithmetic number, because the mean of its divisors is an integer number (104622697440).

Almost surely, 2^{9659389890432} 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 9659389890432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13391705272320).

9659389890432 is an abundant number, since it is smaller than the sum of its proper divisors (17124020654208).

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

9659389890432 is a wasteful number, since it uses less digits than its factorization.

9659389890432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17253 (or 17241 counting only the distinct ones).

The product of its (nonzero) digits is 906992640, while the sum is 75.

The spelling of 9659389890432 in words is "nine trillion, six hundred fifty-nine billion, three hundred eighty-nine million, eight hundred ninety thousand, four hundred thirty-two".