16505830072 has 8 divisors (see below), whose sum is σ = 30948431400. Its totient is φ = 8252915032.

The previous prime is 16505830057. The next prime is 16505830073. The reversal of 16505830072 is 27003850561.

It is a tau number, because it is divible by the number of its divisors (8).

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 as a sum of consecutive naturals, namely, 1031614372 + ... + 1031614387.

It is an arithmetic number, because the mean of its divisors is an integer number (3868553925).

Almost surely, 2^16505830072 is an apocalyptic number.

It is an amenable number.

16505830072 is a deficient number, since it is larger than the sum of its proper divisors (14442601328).

16505830072 is a wasteful number, since it uses less digits than its factorization.

16505830072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2063228765 (or 2063228761 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 37.

The spelling of 16505830072 in words is "sixteen billion, five hundred five million, eight hundred thirty thousand, seventy-two".