561641324633 has 2 divisors, whose sum is σ = 561641324634. Its totient is φ = 561641324632.

The previous prime is 561641324611. The next prime is 561641324663. The reversal of 561641324633 is 336423146165.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 305132502544 + 256508822089 = 552388^2 + 506467^2 .

It is a cyclic number.

It is not a de Polignac number, because 561641324633 - 2³⁴ = 544461455449 is a prime.

It is not a weakly prime, because it can be changed into another prime (561641324663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 280820662316 + 280820662317.

It is an arithmetic number, because the mean of its divisors is an integer number (280820662317).

Almost surely, 2^561641324633 is an apocalyptic number.

It is an amenable number.

561641324633 is a deficient number, since it is larger than the sum of its proper divisors (1).

561641324633 is an equidigital number, since it uses as much as digits as its factorization.

561641324633 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 933120, while the sum is 44.

The spelling of 561641324633 in words is "five hundred sixty-one billion, six hundred forty-one million, three hundred twenty-four thousand, six hundred thirty-three".