16513920568 has 32 divisors (see below), whose sum is σ = 31071146400. Its totient is φ = 8228334208.

The previous prime is 16513920557. The next prime is 16513920569. The reversal of 16513920568 is 86502931561.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16513920569) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3107898 + ... + 3113206.

It is an arithmetic number, because the mean of its divisors is an integer number (970973325).

Almost surely, 2^16513920568 is an apocalyptic number.

It is an amenable number.

16513920568 is a deficient number, since it is larger than the sum of its proper divisors (14557225832).

16513920568 is a wasteful number, since it uses less digits than its factorization.

16513920568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6591 (or 6587 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 46.

The spelling of 16513920568 in words is "sixteen billion, five hundred thirteen million, nine hundred twenty thousand, five hundred sixty-eight".