9966232655 has 24 divisors (see below), whose sum is σ = 12556154832. Its totient is φ = 7592368896.

The previous prime is 9966232651. The next prime is 9966232663. The reversal of 9966232655 is 5562326699.

It is not a de Polignac number, because 9966232655 - 2² = 9966232651 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9966232597 and 9966232606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9966232651) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 290732 + ... + 323198.

It is an arithmetic number, because the mean of its divisors is an integer number (523173118).

Almost surely, 2^9966232655 is an apocalyptic number.

9966232655 is a deficient number, since it is larger than the sum of its proper divisors (2589922177).

9966232655 is a wasteful number, since it uses less digits than its factorization.

9966232655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32603 (or 32574 counting only the distinct ones).

The product of its digits is 5248800, while the sum is 53.

The square root of 9966232655 is about 99831.0205046508. The cubic root of 9966232655 is about 2152.0069707415.

The spelling of 9966232655 in words is "nine billion, nine hundred sixty-six million, two hundred thirty-two thousand, six hundred fifty-five".