561116159 has 8 divisors (see below), whose sum is σ = 577610880. Its totient is φ = 544778136.

The previous prime is 561116147. The next prime is 561116177. The reversal of 561116159 is 951611165.

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 561116159 - 2²⁰ = 560067583 is a prime.

It is a Duffinian number.

It is a plaindrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561116659) 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, 31889 + ... + 46250.

It is an arithmetic number, because the mean of its divisors is an integer number (72201360).

Almost surely, 2^561116159 is an apocalyptic number.

561116159 is a deficient number, since it is larger than the sum of its proper divisors (16494721).

561116159 is a wasteful number, since it uses less digits than its factorization.

561116159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78349.

The product of its digits is 8100, while the sum is 35.

The square root of 561116159 is about 23687.8905561470. The cubic root of 561116159 is about 824.8043167358.

The spelling of 561116159 in words is "five hundred sixty-one million, one hundred sixteen thousand, one hundred fifty-nine".