561507438259 has 2 divisors, whose sum is σ = 561507438260. Its totient is φ = 561507438258.

The previous prime is 561507438241. The next prime is 561507438337. The reversal of 561507438259 is 952834705165.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 561507438259 - 2¹⁷ = 561507307187 is a prime.

It is not a weakly prime, because it can be changed into another prime (561507433259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 280753719129 + 280753719130.

It is an arithmetic number, because the mean of its divisors is an integer number (280753719130).

It is a 1-persistent number, because it is pandigital, but 2⋅561507438259 = 1123014876518 is not.

Almost surely, 2^561507438259 is an apocalyptic number.

561507438259 is a deficient number, since it is larger than the sum of its proper divisors (1).

561507438259 is an equidigital number, since it uses as much as digits as its factorization.

561507438259 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072000, while the sum is 55.

The spelling of 561507438259 in words is "five hundred sixty-one billion, five hundred seven million, four hundred thirty-eight thousand, two hundred fifty-nine".