871658722943 has 2 divisors, whose sum is σ = 871658722944. Its totient is φ = 871658722942.

The previous prime is 871658722919. The next prime is 871658723009. The reversal of 871658722943 is 349227856178.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 871658722943 - 2³⁴ = 854478853759 is a prime.

It is a super-3 number, since 3×871658722943³ (a number of 37 digits) contains 333 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (871658722903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 435829361471 + 435829361472.

It is an arithmetic number, because the mean of its divisors is an integer number (435829361472).

Almost surely, 2^871658722943 is an apocalyptic number.

871658722943 is a deficient number, since it is larger than the sum of its proper divisors (1).

871658722943 is an equidigital number, since it uses as much as digits as its factorization.

871658722943 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40642560, while the sum is 62.

The spelling of 871658722943 in words is "eight hundred seventy-one billion, six hundred fifty-eight million, seven hundred twenty-two thousand, nine hundred forty-three".