16568159993 has 8 divisors (see below), whose sum is σ = 20656407360. Its totient is φ = 12910254480.

The previous prime is 16568159921. The next prime is 16568160001. The reversal of 16568159993 is 39995186561.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16568159993 - 2¹⁴ = 16568143609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16568156993) 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, 107585378 + ... + 107585531.

It is an arithmetic number, because the mean of its divisors is an integer number (2582050920).

Almost surely, 2^16568159993 is an apocalyptic number.

It is an amenable number.

16568159993 is a deficient number, since it is larger than the sum of its proper divisors (4088247367).

16568159993 is a wasteful number, since it uses less digits than its factorization.

16568159993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215170927.

The product of its digits is 15746400, while the sum is 62.

The spelling of 16568159993 in words is "sixteen billion, five hundred sixty-eight million, one hundred fifty-nine thousand, nine hundred ninety-three".