16405687116 has 72 divisors (see below), whose sum is σ = 51039925664. Its totient is φ = 4326773760.

The previous prime is 16405687097. The next prime is 16405687127. The reversal of 16405687116 is 61178650461.

16405687116 is a `hidden beast` number, since 1 + 6 + 4 + 0 + 568 + 71 + 16 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2500645 + ... + 2507196.

Almost surely, 2^16405687116 is an apocalyptic number.

It is an amenable number.

16405687116 is an abundant number, since it is smaller than the sum of its proper divisors (34634238548).

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

16405687116 is a wasteful number, since it uses less digits than its factorization.

16405687116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5007871 (or 5007866 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The spelling of 16405687116 in words is "sixteen billion, four hundred five million, six hundred eighty-seven thousand, one hundred sixteen".