561328524686009 has 2 divisors, whose sum is σ = 561328524686010. Its totient is φ = 561328524686008.

The previous prime is 561328524685987. The next prime is 561328524686101. The reversal of 561328524686009 is 900686425823165.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 502617300280384 + 58711224405625 = 22419128^2 + 7662325^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-561328524686009 is a prime.

It is not a weakly prime, because it can be changed into another prime (561328524686309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 280664262343004 + 280664262343005.

It is an arithmetic number, because the mean of its divisors is an integer number (280664262343005).

Almost surely, 2^{561328524686009} is an apocalyptic number.

It is an amenable number.

561328524686009 is a deficient number, since it is larger than the sum of its proper divisors (1).

561328524686009 is an equidigital number, since it uses as much as digits as its factorization.

561328524686009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 149299200, while the sum is 65.

The spelling of 561328524686009 in words is "five hundred sixty-one trillion, three hundred twenty-eight billion, five hundred twenty-four million, six hundred eighty-six thousand, nine".