16512216216 has 64 divisors (see below), whose sum is σ = 42630451200. Its totient is φ = 5324236800.

The previous prime is 16512216211. The next prime is 16512216223. The reversal of 16512216216 is 61261221561.

16512216216 is a modest number, since divided by 216216 gives 16512 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16512216211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3032056 + ... + 3037496.

It is an arithmetic number, because the mean of its divisors is an integer number (666100800).

Almost surely, 2^16512216216 is an apocalyptic number.

It is an amenable number.

16512216216 is an abundant number, since it is smaller than the sum of its proper divisors (26118234984).

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

16512216216 is a wasteful number, since it uses less digits than its factorization.

16512216216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9560 (or 9556 counting only the distinct ones).

The product of its digits is 8640, while the sum is 33.

Adding to 16512216216 its reverse (61261221561), we get a palindrome (77773437777).

The spelling of 16512216216 in words is "sixteen billion, five hundred twelve million, two hundred sixteen thousand, two hundred sixteen".