561623980033 has 2 divisors, whose sum is σ = 561623980034. Its totient is φ = 561623980032.

The previous prime is 561623979989. The next prime is 561623980037. The reversal of 561623980033 is 330089326165.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 490347261504 + 71276718529 = 700248^2 + 266977^2 .

It is a cyclic number.

It is not a de Polignac number, because 561623980033 - 2¹³ = 561623971841 is a prime.

It is not a weakly prime, because it can be changed into another prime (561623980037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 280811990016 + 280811990017.

It is an arithmetic number, because the mean of its divisors is an integer number (280811990017).

Almost surely, 2^561623980033 is an apocalyptic number.

It is an amenable number.

561623980033 is a deficient number, since it is larger than the sum of its proper divisors (1).

561623980033 is an equidigital number, since it uses as much as digits as its factorization.

561623980033 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 699840, while the sum is 46.

The spelling of 561623980033 in words is "five hundred sixty-one billion, six hundred twenty-three million, nine hundred eighty thousand, thirty-three".