871085831847044 has 24 divisors (see below), whose sum is σ = 1735285609689408. Its totient is φ = 378732970367840.

The previous prime is 871085831846959. The next prime is 871085831847073. The reversal of 871085831847044 is 440748138580178.

It is a super-2 number, since 2×871085831847044² (a number of 31 digits) contains 22 as substring.

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, 430378374407 + ... + 430378376430.

It is an arithmetic number, because the mean of its divisors is an integer number (72303567070392).

Almost surely, 2^{871085831847044} is an apocalyptic number.

It is an amenable number.

871085831847044 is a deficient number, since it is larger than the sum of its proper divisors (864199777842364).

871085831847044 is a wasteful number, since it uses less digits than its factorization.

871085831847044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 860756750875 (or 860756750873 counting only the distinct ones).

The product of its (nonzero) digits is 192675840, while the sum is 68.

The spelling of 871085831847044 in words is "eight hundred seventy-one trillion, eighty-five billion, eight hundred thirty-one million, eight hundred forty-seven thousand, forty-four".