871124621605793 has 2 divisors, whose sum is σ = 871124621605794. Its totient is φ = 871124621605792.

The previous prime is 871124621605787. The next prime is 871124621605801. The reversal of 871124621605793 is 397506126421178.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 703803334021264 + 167321287584529 = 26529292^2 + 12935273^2 .

It is a cyclic number.

It is not a de Polignac number, because 871124621605793 - 2⁴⁸ = 589649644895137 is a prime.

It is not a weakly prime, because it can be changed into another prime (871124621605723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 435562310802896 + 435562310802897.

It is an arithmetic number, because the mean of its divisors is an integer number (435562310802897).

It is a 1-persistent number, because it is pandigital, but 2⋅871124621605793 = 1742249243211586 is not.

Almost surely, 2^{871124621605793} is an apocalyptic number.

It is an amenable number.

871124621605793 is a deficient number, since it is larger than the sum of its proper divisors (1).

871124621605793 is an equidigital number, since it uses as much as digits as its factorization.

871124621605793 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30481920, while the sum is 62.

The spelling of 871124621605793 in words is "eight hundred seventy-one trillion, one hundred twenty-four billion, six hundred twenty-one million, six hundred five thousand, seven hundred ninety-three".