871031788857385 has 32 divisors (see below), whose sum is σ = 1111502751840000. Its totient is φ = 653405742925056.

The previous prime is 871031788857383. The next prime is 871031788857427. The reversal of 871031788857385 is 583758887130178.

It is not a de Polignac number, because 871031788857385 - 2¹ = 871031788857383 is a prime.

It is a super-2 number, since 2×871031788857385² (a number of 31 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (871031788857383) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3765630 + ... + 41907559.

It is an arithmetic number, because the mean of its divisors is an integer number (34734460995000).

Almost surely, 2^{871031788857385} is an apocalyptic number.

It is an amenable number.

871031788857385 is a deficient number, since it is larger than the sum of its proper divisors (240470962982615).

871031788857385 is a wasteful number, since it uses less digits than its factorization.

871031788857385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45675265.

The product of its (nonzero) digits is 2528870400, while the sum is 79.

The spelling of 871031788857385 in words is "eight hundred seventy-one trillion, thirty-one billion, seven hundred eighty-eight million, eight hundred fifty-seven thousand, three hundred eighty-five".