871993738688 has 56 divisors (see below), whose sum is σ = 1773240080640. Its totient is φ = 425201172480.

The previous prime is 871993738669. The next prime is 871993738709. The reversal of 871993738688 is 886837399178.

It is a super-2 number, since 2×871993738688² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6994145 + ... + 7117727.

It is an arithmetic number, because the mean of its divisors is an integer number (31665001440).

Almost surely, 2^871993738688 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 871993738688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (886620040320).

871993738688 is an abundant number, since it is smaller than the sum of its proper divisors (901246341952).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

871993738688 is a wasteful number, since it uses less digits than its factorization.

871993738688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126325 (or 126315 counting only the distinct ones).

The product of its digits is 877879296, while the sum is 77.

The spelling of 871993738688 in words is "eight hundred seventy-one billion, nine hundred ninety-three million, seven hundred thirty-eight thousand, six hundred eighty-eight".