565146408961 has 4 divisors (see below), whose sum is σ = 565368124500. Its totient is φ = 564924693424.

The previous prime is 565146408833. The next prime is 565146408971. The reversal of 565146408961 is 169804641565.

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 538367050225 + 26779358736 = 733735^2 + 163644^2 .

It is a cyclic number.

It is not a de Polignac number, because 565146408961 - 2⁷ = 565146408833 is a prime.

It is a super-2 number, since 2×565146408961² (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 (565146408971) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 110853946 + ... + 110859043.

It is an arithmetic number, because the mean of its divisors is an integer number (141342031125).

Almost surely, 2^565146408961 is an apocalyptic number.

It is an amenable number.

565146408961 is a deficient number, since it is larger than the sum of its proper divisors (221715539).

565146408961 is a wasteful number, since it uses less digits than its factorization.

565146408961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221715538.

The product of its (nonzero) digits is 6220800, while the sum is 55.

The spelling of 565146408961 in words is "five hundred sixty-five billion, one hundred forty-six million, four hundred eight thousand, nine hundred sixty-one".