159565968 has 60 divisors (see below), whose sum is σ = 452881728. Its totient is φ = 52436160.

The previous prime is 159565963. The next prime is 159565979. The reversal of 159565968 is 869565951.

159565968 is a `hidden beast` number, since 15 + 9 + 565 + 9 + 68 = 666.

It is a super-2 number, since 2×159565968² = 50922596287554048, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (159565963) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2421 + ... + 18027.

Almost surely, 2^159565968 is an apocalyptic number.

159565968 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 159565968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (226440864).

159565968 is an abundant number, since it is smaller than the sum of its proper divisors (293315760).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

159565968 is a wasteful number, since it uses less digits than its factorization.

159565968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15692 (or 15683 counting only the distinct ones).

The product of its digits is 2916000, while the sum is 54.

The square root of 159565968 is about 12631.9423684562. The cubic root of 159565968 is about 542.3921853888.

The spelling of 159565968 in words is "one hundred fifty-nine million, five hundred sixty-five thousand, nine hundred sixty-eight".