9538665123232 has 288 divisors, whose sum is σ = 22758184854720. Its totient is φ = 3919243345920.

The previous prime is 9538665123223. The next prime is 9538665123257. The reversal of 9538665123232 is 2323215668359.

It is a super-2 number, since 2×9538665123232² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5536078723 + ... + 5536080445.

It is an arithmetic number, because the mean of its divisors is an integer number (79021475190).

Almost surely, 2^{9538665123232} 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 9538665123232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11379092427360).

9538665123232 is an abundant number, since it is smaller than the sum of its proper divisors (13219519731488).

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

9538665123232 is a wasteful number, since it uses less digits than its factorization.

9538665123232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2564 (or 2549 counting only the distinct ones).

The product of its digits is 13996800, while the sum is 55.

The spelling of 9538665123232 in words is "nine trillion, five hundred thirty-eight billion, six hundred sixty-five million, one hundred twenty-three thousand, two hundred thirty-two".