558871623403861 has 2 divisors, whose sum is σ = 558871623403862. Its totient is φ = 558871623403860.

The previous prime is 558871623403853. The next prime is 558871623403871. The reversal of 558871623403861 is 168304326178855.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 344511834660900 + 214359788742961 = 18561030^2 + 14641031^2 .

It is a cyclic number.

It is not a de Polignac number, because 558871623403861 - 2³ = 558871623403853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (558871623403831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 279435811701930 + 279435811701931.

It is an arithmetic number, because the mean of its divisors is an integer number (279435811701931).

Almost surely, 2^{558871623403861} is an apocalyptic number.

It is an amenable number.

558871623403861 is a deficient number, since it is larger than the sum of its proper divisors (1).

558871623403861 is an equidigital number, since it uses as much as digits as its factorization.

558871623403861 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 232243200, while the sum is 67.

The spelling of 558871623403861 in words is "five hundred fifty-eight trillion, eight hundred seventy-one billion, six hundred twenty-three million, four hundred three thousand, eight hundred sixty-one".