9966537075232 has 48 divisors (see below), whose sum is σ = 19992480587352. Its totient is φ = 4889087723520.

The previous prime is 9966537075199. The next prime is 9966537075239. The reversal of 9966537075232 is 2325707356699.

It can be written as a sum of positive squares in 4 ways, for example, as 9939668620176 + 26868455056 = 3152724^2 + 163916^2 .

It is a super-2 number, since 2×9966537075232² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (9966537075239) 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 7 ways as a sum of consecutive naturals, for example, 66742732 + ... + 66891892.

Almost surely, 2^{9966537075232} is an apocalyptic number.

It is an amenable number.

9966537075232 is an abundant number, since it is smaller than the sum of its proper divisors (10025943512120).

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

9966537075232 is a wasteful number, since it uses less digits than its factorization.

9966537075232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188621 (or 188613 counting only the distinct ones).

The product of its (nonzero) digits is 128595600, while the sum is 64.

The spelling of 9966537075232 in words is "nine trillion, nine hundred sixty-six billion, five hundred thirty-seven million, seventy-five thousand, two hundred thirty-two".