16505830071 has 12 divisors (see below), whose sum is σ = 23901215520. Its totient is φ = 10976443200.

The previous prime is 16505830057. The next prime is 16505830073. The reversal of 16505830071 is 17003850561.

16505830071 is a `hidden beast` number, since 1 + 6 + 5 + 0 + 583 + 0 + 0 + 71 = 666.

It is not a de Polignac number, because 16505830071 - 2⁹ = 16505829559 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16505830073) 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, 2283151 + ... + 2290368.

It is an arithmetic number, because the mean of its divisors is an integer number (1991767960).

Almost surely, 2^16505830071 is an apocalyptic number.

16505830071 is a deficient number, since it is larger than the sum of its proper divisors (7395385449).

16505830071 is a wasteful number, since it uses less digits than its factorization.

16505830071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4573926 (or 4573923 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 36.

The spelling of 16505830071 in words is "sixteen billion, five hundred five million, eight hundred thirty thousand, seventy-one".