16564040116 has 12 divisors (see below), whose sum is σ = 31216844932. Its totient is φ = 7644941568.

The previous prime is 16564040089. The next prime is 16564040159. The reversal of 16564040116 is 61104046561.

It can be written as a sum of positive squares in 2 ways, for example, as 7639459216 + 8924580900 = 87404^2 + 94470^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 159269565 + ... + 159269668.

Almost surely, 2^16564040116 is an apocalyptic number.

It is an amenable number.

16564040116 is a deficient number, since it is larger than the sum of its proper divisors (14652804816).

16564040116 is a wasteful number, since it uses less digits than its factorization.

16564040116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318539250 (or 318539248 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 34.

Adding to 16564040116 its reverse (61104046561), we get a palindrome (77668086677).

The spelling of 16564040116 in words is "sixteen billion, five hundred sixty-four million, forty thousand, one hundred sixteen".