16444435216 has 20 divisors (see below), whose sum is σ = 34757556624. Its totient is φ = 7474743200.

The previous prime is 16444435159. The next prime is 16444435237. The reversal of 16444435216 is 61253444461.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46716970 + ... + 46717321.

Almost surely, 2^16444435216 is an apocalyptic number.

16444435216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

16444435216 is an abundant number, since it is smaller than the sum of its proper divisors (18313121408).

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

16444435216 is a wasteful number, since it uses less digits than its factorization.

16444435216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93434310 (or 93434304 counting only the distinct ones).

The product of its digits is 276480, while the sum is 40.

Adding to 16444435216 its reverse (61253444461), we get a palindrome (77697879677).

The spelling of 16444435216 in words is "sixteen billion, four hundred forty-four million, four hundred thirty-five thousand, two hundred sixteen".