565481211241121 has 16 divisors (see below), whose sum is σ = 649919693664384. Its totient is φ = 481964303810304.

The previous prime is 565481211241073. The next prime is 565481211241139. The reversal of 565481211241121 is 121142112184565.

It is not a de Polignac number, because 565481211241121 - 2¹⁸ = 565481210978977 is a prime.

It is a super-2 number, since 2×565481211241121² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (565481211246121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 320450195 + ... + 322210008.

It is an arithmetic number, because the mean of its divisors is an integer number (40619980854024).

Almost surely, 2^{565481211241121} is an apocalyptic number.

It is an amenable number.

565481211241121 is a deficient number, since it is larger than the sum of its proper divisors (84438482423263).

565481211241121 is a wasteful number, since it uses less digits than its factorization.

565481211241121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 642660920.

The product of its digits is 153600, while the sum is 44.

The spelling of 565481211241121 in words is "five hundred sixty-five trillion, four hundred eighty-one billion, two hundred eleven million, two hundred forty-one thousand, one hundred twenty-one".