16675221208 has 32 divisors (see below), whose sum is σ = 31531197600. Its totient is φ = 8267150592.

The previous prime is 16675221203. The next prime is 16675221247. The reversal of 16675221208 is 80212257661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16675221203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 531166 + ... + 561682.

It is an arithmetic number, because the mean of its divisors is an integer number (985349925).

Almost surely, 2^16675221208 is an apocalyptic number.

It is an amenable number.

16675221208 is a deficient number, since it is larger than the sum of its proper divisors (14855976392).

16675221208 is a wasteful number, since it uses less digits than its factorization.

16675221208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31099 (or 31095 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 40.

Adding to 16675221208 its reverse (80212257661), we get a palindrome (96887478869).

The spelling of 16675221208 in words is "sixteen billion, six hundred seventy-five million, two hundred twenty-one thousand, two hundred eight".