561727833389 has 2 divisors, whose sum is σ = 561727833390. Its totient is φ = 561727833388.

The previous prime is 561727833379. The next prime is 561727833473. The reversal of 561727833389 is 983338727165.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 538939515625 + 22788317764 = 734125^2 + 150958^2 .

It is a cyclic number.

It is not a de Polignac number, because 561727833389 - 2³² = 557432866093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (561727833379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 280863916694 + 280863916695.

It is an arithmetic number, because the mean of its divisors is an integer number (280863916695).

Almost surely, 2^561727833389 is an apocalyptic number.

It is an amenable number.

561727833389 is a deficient number, since it is larger than the sum of its proper divisors (1).

561727833389 is an equidigital number, since it uses as much as digits as its factorization.

561727833389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 45722880, while the sum is 62.

The spelling of 561727833389 in words is "five hundred sixty-one billion, seven hundred twenty-seven million, eight hundred thirty-three thousand, three hundred eighty-nine".