561004126339 has 2 divisors, whose sum is σ = 561004126340. Its totient is φ = 561004126338.

The previous prime is 561004126337. The next prime is 561004126421. The reversal of 561004126339 is 933621400165.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 561004126339 - 2¹ = 561004126337 is a prime.

Together with 561004126337, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (561004126337) 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, 280502063169 + 280502063170.

It is an arithmetic number, because the mean of its divisors is an integer number (280502063170).

Almost surely, 2^561004126339 is an apocalyptic number.

561004126339 is a deficient number, since it is larger than the sum of its proper divisors (1).

561004126339 is an equidigital number, since it uses as much as digits as its factorization.

561004126339 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 116640, while the sum is 40.

The spelling of 561004126339 in words is "five hundred sixty-one billion, four million, one hundred twenty-six thousand, three hundred thirty-nine".