561111673229 has 2 divisors, whose sum is σ = 561111673230. Its totient is φ = 561111673228.

The previous prime is 561111673211. The next prime is 561111673337. The reversal of 561111673229 is 922376111165.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 558083702500 + 3027970729 = 747050^2 + 55027^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-561111673229 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 561111673229.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (561111603229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 280555836614 + 280555836615.

It is an arithmetic number, because the mean of its divisors is an integer number (280555836615).

Almost surely, 2^561111673229 is an apocalyptic number.

It is an amenable number.

561111673229 is a deficient number, since it is larger than the sum of its proper divisors (1).

561111673229 is an equidigital number, since it uses as much as digits as its factorization.

561111673229 is an evil number, because the sum of its binary digits is even.

The product of its digits is 136080, while the sum is 44.

The spelling of 561111673229 in words is "five hundred sixty-one billion, one hundred eleven million, six hundred seventy-three thousand, two hundred twenty-nine".