871088810020 has 96 divisors (see below), whose sum is σ = 2154856112640. Its totient is φ = 291609192960.

The previous prime is 871088809963. The next prime is 871088810083. The reversal of 871088810020 is 20018880178.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 658501 + ... + 1475059.

It is an arithmetic number, because the mean of its divisors is an integer number (22446417840).

Almost surely, 2^871088810020 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 871088810020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1077428056320).

871088810020 is an abundant number, since it is smaller than the sum of its proper divisors (1283767302620).

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

871088810020 is a wasteful number, since it uses less digits than its factorization.

871088810020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 816965 (or 816963 counting only the distinct ones).

The product of its (nonzero) digits is 57344, while the sum is 43.

The spelling of 871088810020 in words is "eight hundred seventy-one billion, eighty-eight million, eight hundred ten thousand, twenty".