16335221808 has 20 divisors (see below), whose sum is σ = 42199323128. Its totient is φ = 5445073920.

The previous prime is 16335221807. The next prime is 16335221831. The reversal of 16335221808 is 80812253361.

It is not an unprimeable number, because it can be changed into a prime (16335221801) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 170158513 + ... + 170158608.

Almost surely, 2^16335221808 is an apocalyptic number.

It is an amenable number.

16335221808 is an abundant number, since it is smaller than the sum of its proper divisors (25864101320).

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

16335221808 is a wasteful number, since it uses less digits than its factorization.

16335221808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340317132 (or 340317126 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 39.

The spelling of 16335221808 in words is "sixteen billion, three hundred thirty-five million, two hundred twenty-one thousand, eight hundred eight".