16549643922568 has 32 divisors (see below), whose sum is σ = 31192045839360. Its totient is φ = 8231766912000.

The previous prime is 16549643922551. The next prime is 16549643922593. The reversal of 16549643922568 is 86522934694561.

It is a junction number, because it is equal to n+sod(n) for n = 16549643922497 and 16549643922506.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95714193 + ... + 95886943.

It is an arithmetic number, because the mean of its divisors is an integer number (974751432480).

Almost surely, 2^{16549643922568} is an apocalyptic number.

It is an amenable number.

16549643922568 is a deficient number, since it is larger than the sum of its proper divisors (14642401916792).

16549643922568 is a wasteful number, since it uses less digits than its factorization.

16549643922568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234997 (or 234993 counting only the distinct ones).

The product of its digits is 671846400, while the sum is 70.

The spelling of 16549643922568 in words is "sixteen trillion, five hundred forty-nine billion, six hundred forty-three million, nine hundred twenty-two thousand, five hundred sixty-eight".