561065050565 has 8 divisors (see below), whose sum is σ = 679454924280. Its totient is φ = 444734131392.

The previous prime is 561065050543. The next prime is 561065050571. The reversal of 561065050565 is 565050560165.

It can be written as a sum of positive squares in 4 ways, for example, as 200817808129 + 360247242436 = 448127^2 + 600206^2 .

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 561065050565 - 2¹⁰ = 561065049541 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 514738034 + ... + 514739123.

It is an arithmetic number, because the mean of its divisors is an integer number (84931865535).

Almost surely, 2^561065050565 is an apocalyptic number.

It is an amenable number.

561065050565 is a deficient number, since it is larger than the sum of its proper divisors (118389873715).

561065050565 is a wasteful number, since it uses less digits than its factorization.

561065050565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1029477271.

The product of its (nonzero) digits is 675000, while the sum is 44.

The spelling of 561065050565 in words is "five hundred sixty-one billion, sixty-five million, fifty thousand, five hundred sixty-five".