565165011601 has 2 divisors, whose sum is σ = 565165011602. Its totient is φ = 565165011600.

The previous prime is 565165011553. The next prime is 565165011667. The reversal of 565165011601 is 106110561565.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 340616973376 + 224548038225 = 583624^2 + 473865^2 .

It is a cyclic number.

It is not a de Polignac number, because 565165011601 - 2¹⁷ = 565164880529 is a prime.

It is a super-2 number, since 2×565165011601² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (565165017601) 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 as a sum of consecutive naturals, namely, 282582505800 + 282582505801.

It is an arithmetic number, because the mean of its divisors is an integer number (282582505801).

Almost surely, 2^565165011601 is an apocalyptic number.

It is an amenable number.

565165011601 is a deficient number, since it is larger than the sum of its proper divisors (1).

565165011601 is an equidigital number, since it uses as much as digits as its factorization.

565165011601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27000, while the sum is 37.

The spelling of 565165011601 in words is "five hundred sixty-five billion, one hundred sixty-five million, eleven thousand, six hundred one".