871057071447643 has 2 divisors, whose sum is σ = 871057071447644. Its totient is φ = 871057071447642.

The previous prime is 871057071447637. The next prime is 871057071447679. The reversal of 871057071447643 is 346744170750178.

871057071447643 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-871057071447643 is a prime.

It is not a weakly prime, because it can be changed into another prime (871057071447613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 435528535723821 + 435528535723822.

It is an arithmetic number, because the mean of its divisors is an integer number (435528535723822).

Almost surely, 2^{871057071447643} is an apocalyptic number.

871057071447643 is a deficient number, since it is larger than the sum of its proper divisors (1).

871057071447643 is an equidigital number, since it uses as much as digits as its factorization.

871057071447643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 110638080, while the sum is 64.

The spelling of 871057071447643 in words is "eight hundred seventy-one trillion, fifty-seven billion, seventy-one million, four hundred forty-seven thousand, six hundred forty-three".