561216741731231 has 2 divisors, whose sum is σ = 561216741731232. Its totient is φ = 561216741731230.

The previous prime is 561216741731141. The next prime is 561216741731287. The reversal of 561216741731231 is 132137147612165.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 561216741731231 - 2⁴⁶ = 490847997553567 is a prime.

It is a super-2 number, since 2×561216741731231² (a number of 30 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 561216741731231.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (561216741731291) 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, 280608370865615 + 280608370865616.

It is an arithmetic number, because the mean of its divisors is an integer number (280608370865616).

Almost surely, 2^{561216741731231} is an apocalyptic number.

561216741731231 is a deficient number, since it is larger than the sum of its proper divisors (1).

561216741731231 is an equidigital number, since it uses as much as digits as its factorization.

561216741731231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1270080, while the sum is 50.

The spelling of 561216741731231 in words is "five hundred sixty-one trillion, two hundred sixteen billion, seven hundred forty-one million, seven hundred thirty-one thousand, two hundred thirty-one".