561542012003263 has 2 divisors, whose sum is σ = 561542012003264. Its totient is φ = 561542012003262.

The previous prime is 561542012003257. The next prime is 561542012003267. The reversal of 561542012003263 is 362300210245165.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-561542012003263 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (561542012003267) 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, 280771006001631 + 280771006001632.

It is an arithmetic number, because the mean of its divisors is an integer number (280771006001632).

Almost surely, 2^{561542012003263} is an apocalyptic number.

561542012003263 is a deficient number, since it is larger than the sum of its proper divisors (1).

561542012003263 is an equidigital number, since it uses as much as digits as its factorization.

561542012003263 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 259200, while the sum is 40.

The spelling of 561542012003263 in words is "five hundred sixty-one trillion, five hundred forty-two billion, twelve million, three thousand, two hundred sixty-three".