871725957845 has 8 divisors (see below), whose sum is σ = 1046086344576. Its totient is φ = 697370636176.

The previous prime is 871725957779. The next prime is 871725957847. The reversal of 871725957845 is 548759527178.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 871725957845 - 2⁸ = 871725957589 is a prime.

It is a super-2 number, since 2×871725957845² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (871725957847) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 876737 + ... + 1584966.

It is an arithmetic number, because the mean of its divisors is an integer number (130760793072).

Almost surely, 2^871725957845 is an apocalyptic number.

It is an amenable number.

871725957845 is a deficient number, since it is larger than the sum of its proper divisors (174360386731).

871725957845 is a wasteful number, since it uses less digits than its factorization.

871725957845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2532531.

The product of its digits is 197568000, while the sum is 68.

The spelling of 871725957845 in words is "eight hundred seventy-one billion, seven hundred twenty-five million, nine hundred fifty-seven thousand, eight hundred forty-five".