9966638322 has 24 divisors (see below), whose sum is σ = 22290977280. Its totient is φ = 3215044440.

The previous prime is 9966638267. The next prime is 9966638327. The reversal of 9966638322 is 2238366699.

It is not an unprimeable number, because it can be changed into a prime (9966638327) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8930122 + ... + 8931237.

It is an arithmetic number, because the mean of its divisors is an integer number (928790720).

Almost surely, 2^9966638322 is an apocalyptic number.

9966638322 is an abundant number, since it is smaller than the sum of its proper divisors (12324338958).

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

9966638322 is a wasteful number, since it uses less digits than its factorization.

9966638322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17861398 (or 17861395 counting only the distinct ones).

The product of its digits is 5038848, while the sum is 54.

The square root of 9966638322 is about 99833.0522522476. The cubic root of 9966638322 is about 2152.0361688814.

The spelling of 9966638322 in words is "nine billion, nine hundred sixty-six million, six hundred thirty-eight thousand, three hundred twenty-two".