571617471461849 has 2 divisors, whose sum is σ = 571617471461850. Its totient is φ = 571617471461848.

The previous prime is 571617471461731. The next prime is 571617471461863. The reversal of 571617471461849 is 948164174716175.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 570571570489600 + 1045900972249 = 23886640^2 + 1022693^2 .

It is a cyclic number.

It is not a de Polignac number, because 571617471461849 - 2⁴⁰ = 570517959834073 is a prime.

It is not a weakly prime, because it can be changed into another prime (571617471461149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 285808735730924 + 285808735730925.

It is an arithmetic number, because the mean of its divisors is an integer number (285808735730925).

Almost surely, 2^{571617471461849} is an apocalyptic number.

It is an amenable number.

571617471461849 is a deficient number, since it is larger than the sum of its proper divisors (1).

571617471461849 is an equidigital number, since it uses as much as digits as its factorization.

571617471461849 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 284497920, while the sum is 71.

The spelling of 571617471461849 in words is "five hundred seventy-one trillion, six hundred seventeen billion, four hundred seventy-one million, four hundred sixty-one thousand, eight hundred forty-nine".