561573131442311 has 2 divisors, whose sum is σ = 561573131442312. Its totient is φ = 561573131442310.

The previous prime is 561573131442307. The next prime is 561573131442317. The reversal of 561573131442311 is 113244131375165.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 561573131442311 - 2² = 561573131442307 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (561573131442317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 280786565721155 + 280786565721156.

It is an arithmetic number, because the mean of its divisors is an integer number (280786565721156).

Almost surely, 2^{561573131442311} is an apocalyptic number.

561573131442311 is a deficient number, since it is larger than the sum of its proper divisors (1).

561573131442311 is an equidigital number, since it uses as much as digits as its factorization.

561573131442311 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 907200, while the sum is 47.

The spelling of 561573131442311 in words is "five hundred sixty-one trillion, five hundred seventy-three billion, one hundred thirty-one million, four hundred forty-two thousand, three hundred eleven".