16005505612 has 6 divisors (see below), whose sum is σ = 28009634828. Its totient is φ = 8002752804.

The previous prime is 16005505603. The next prime is 16005505613. The reversal of 16005505612 is 21650550061.

It is not an unprimeable number, because it can be changed into a prime (16005505613) 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 as a sum of consecutive naturals, namely, 2000688198 + ... + 2000688205.

Almost surely, 2^16005505612 is an apocalyptic number.

It is an amenable number.

16005505612 is a deficient number, since it is larger than the sum of its proper divisors (12004129216).

16005505612 is a wasteful number, since it uses less digits than its factorization.

16005505612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4001376407 (or 4001376405 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 31.

The spelling of 16005505612 in words is "sixteen billion, five million, five hundred five thousand, six hundred twelve".