871803574272 has 144 divisors (see below), whose sum is σ = 2523793839840. Its totient is φ = 289924300800.

The previous prime is 871803574259. The next prime is 871803574303. The reversal of 871803574272 is 272475308178.

871803574272 is a `hidden beast` number, since 8 + 7 + 18 + 0 + 357 + 4 + 272 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a super-2 number, since 2×871803574272² (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 11 ways as a sum of consecutive naturals, for example, 7889322 + ... + 7999062.

It is an arithmetic number, because the mean of its divisors is an integer number (17526346110).

Almost surely, 2^871803574272 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 871803574272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1261896919920).

871803574272 is an abundant number, since it is smaller than the sum of its proper divisors (1651990265568).

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

871803574272 is a wasteful number, since it uses less digits than its factorization.

871803574272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110200 (or 110177 counting only the distinct ones).

The product of its (nonzero) digits is 5268480, while the sum is 54.

The spelling of 871803574272 in words is "eight hundred seventy-one billion, eight hundred three million, five hundred seventy-four thousand, two hundred seventy-two".