16565600115656 has 16 divisors (see below), whose sum is σ = 31335371901900. Its totient is φ = 8209500941824.

The previous prime is 16565600115653. The next prime is 16565600115667. The reversal of 16565600115656 is 65651100656561.

It can be written as a sum of positive squares in 2 ways, for example, as 9484860062500 + 7080740053156 = 3079750^2 + 2660966^2 .

It is a junction number, because it is equal to n+sod(n) for n = 16565600115598 and 16565600115607.

It is not an unprimeable number, because it can be changed into a prime (16565600115653) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9162388541 + ... + 9162390348.

Almost surely, 2^{16565600115656} is an apocalyptic number.

It is an amenable number.

16565600115656 is a deficient number, since it is larger than the sum of its proper divisors (14769771786244).

16565600115656 is a wasteful number, since it uses less digits than its factorization.

16565600115656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18324779008 (or 18324779004 counting only the distinct ones).

The product of its (nonzero) digits is 4860000, while the sum is 53.

The spelling of 16565600115656 in words is "sixteen trillion, five hundred sixty-five billion, six hundred million, one hundred fifteen thousand, six hundred fifty-six".