871947031020 has 48 divisors (see below), whose sum is σ = 2629255665120. Its totient is φ = 214633115136.

The previous prime is 871947030979. The next prime is 871947031027. The reversal of 871947031020 is 20130749178.

It is not an unprimeable number, because it can be changed into a prime (871947031027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 558939625 + ... + 558941184.

It is an arithmetic number, because the mean of its divisors is an integer number (54776159690).

Almost surely, 2^871947031020 is an apocalyptic number.

It is an amenable number.

871947031020 is an abundant number, since it is smaller than the sum of its proper divisors (1757308634100).

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

871947031020 is a wasteful number, since it uses less digits than its factorization.

871947031020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1117880834 (or 1117880832 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 42.

The spelling of 871947031020 in words is "eight hundred seventy-one billion, nine hundred forty-seven million, thirty-one thousand, twenty".