871124621605723 has 2 divisors, whose sum is σ = 871124621605724. Its totient is φ = 871124621605722.

The previous prime is 871124621605717. The next prime is 871124621605751. The reversal of 871124621605723 is 327506126421178.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 871124621605723 - 2⁵ = 871124621605691 is a prime.

It is not a weakly prime, because it can be changed into another prime (871124621605793) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 435562310802861 + 435562310802862.

It is an arithmetic number, because the mean of its divisors is an integer number (435562310802862).

Almost surely, 2^{871124621605723} is an apocalyptic number.

871124621605723 is a deficient number, since it is larger than the sum of its proper divisors (1).

871124621605723 is an equidigital number, since it uses as much as digits as its factorization.

871124621605723 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6773760, while the sum is 55.

The spelling of 871124621605723 in words is "eight hundred seventy-one trillion, one hundred twenty-four billion, six hundred twenty-one million, six hundred five thousand, seven hundred twenty-three".