565051050561 has 4 divisors (see below), whose sum is σ = 753401400752. Its totient is φ = 376700700372.

The previous prime is 565051050493. The next prime is 565051050593. The reversal of 565051050561 is 165050150565.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 565051050561 - 2¹⁸ = 565050788417 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (565051050061) 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, 94175175091 + ... + 94175175096.

It is an arithmetic number, because the mean of its divisors is an integer number (188350350188).

Almost surely, 2^565051050561 is an apocalyptic number.

It is an amenable number.

565051050561 is a deficient number, since it is larger than the sum of its proper divisors (188350350191).

565051050561 is a wasteful number, since it uses less digits than its factorization.

565051050561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188350350190.

The product of its (nonzero) digits is 112500, while the sum is 39.

The spelling of 565051050561 in words is "five hundred sixty-five billion, fifty-one million, fifty thousand, five hundred sixty-one".