566501511161 has 4 divisors (see below), whose sum is σ = 581812362852. Its totient is φ = 551190659472.

The previous prime is 566501511119. The next prime is 566501511181. The reversal of 566501511161 is 161115105665.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 519940502761 + 46561008400 = 721069^2 + 215780^2 .

It is a cyclic number.

It is not a de Polignac number, because 566501511161 - 2⁶ = 566501511097 is a prime.

It is a super-3 number, since 3×566501511161³ (a number of 36 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (566501511101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7655425790 + ... + 7655425863.

It is an arithmetic number, because the mean of its divisors is an integer number (145453090713).

Almost surely, 2^566501511161 is an apocalyptic number.

It is an amenable number.

566501511161 is a deficient number, since it is larger than the sum of its proper divisors (15310851691).

566501511161 is a wasteful number, since it uses less digits than its factorization.

566501511161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15310851690.

The product of its (nonzero) digits is 27000, while the sum is 38.

The spelling of 566501511161 in words is "five hundred sixty-six billion, five hundred one million, five hundred eleven thousand, one hundred sixty-one".