565432331161 has 8 divisors (see below), whose sum is σ = 566355792744. Its totient is φ = 564508999680.

The previous prime is 565432331159. The next prime is 565432331209. The reversal of 565432331161 is 161133234565.

It can be written as a sum of positive squares in 4 ways, for example, as 141541488400 + 423890842761 = 376220^2 + 651069^2 .

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 565432331161 - 2¹ = 565432331159 is a prime.

It is a super-2 number, since 2×565432331161² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (565432361161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12639345 + ... + 12684001.

It is an arithmetic number, because the mean of its divisors is an integer number (70794474093).

Almost surely, 2^565432331161 is an apocalyptic number.

It is an amenable number.

565432331161 is a deficient number, since it is larger than the sum of its proper divisors (923461583).

565432331161 is a wasteful number, since it uses less digits than its factorization.

565432331161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65051.

The product of its digits is 194400, while the sum is 40.

The spelling of 565432331161 in words is "five hundred sixty-five billion, four hundred thirty-two million, three hundred thirty-one thousand, one hundred sixty-one".