16216616511 has 12 divisors (see below), whose sum is σ = 23434246888. Its totient is φ = 10806349104.

The previous prime is 16216616501. The next prime is 16216616519. The reversal of 16216616511 is 11561661261.

16216616511 is a `hidden beast` number, since 1 + 6 + 21 + 6 + 616 + 5 + 11 = 666.

It is not a de Polignac number, because 16216616511 - 2¹⁵ = 16216583743 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16216616519) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 372265 + ... + 413538.

Almost surely, 2^16216616511 is an apocalyptic number.

16216616511 is a deficient number, since it is larger than the sum of its proper divisors (7217630377).

16216616511 is a wasteful number, since it uses less digits than its factorization.

16216616511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 788102 (or 788099 counting only the distinct ones).

The product of its digits is 12960, while the sum is 36.

The spelling of 16216616511 in words is "sixteen billion, two hundred sixteen million, six hundred sixteen thousand, five hundred eleven".