871181481220 has 24 divisors (see below), whose sum is σ = 1847594789208. Its totient is φ = 345022368000.

The previous prime is 871181481187. The next prime is 871181481239. The reversal of 871181481220 is 22184181178.

871181481220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 273071043844 + 598110437376 = 522562^2 + 773376^2 .

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, 215636961 + ... + 215641000.

It is an arithmetic number, because the mean of its divisors is an integer number (76983116217).

Almost surely, 2^871181481220 is an apocalyptic number.

It is an amenable number.

871181481220 is an abundant number, since it is smaller than the sum of its proper divisors (976413307988).

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

871181481220 is a wasteful number, since it uses less digits than its factorization.

871181481220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 431278071 (or 431278069 counting only the distinct ones).

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

The spelling of 871181481220 in words is "eight hundred seventy-one billion, one hundred eighty-one million, four hundred eighty-one thousand, two hundred twenty".