871805710735672 has 64 divisors (see below), whose sum is σ = 1656507905280000. Its totient is φ = 430078215106176.

The previous prime is 871805710735639. The next prime is 871805710735679. The reversal of 871805710735672 is 276537017508178.

871805710735672 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×871805710735672² (a number of 31 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 871805710735598 and 871805710735607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (871805710735679) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7811893329 + ... + 7812004927.

It is an arithmetic number, because the mean of its divisors is an integer number (25882936020000).

Almost surely, 2^{871805710735672} is an apocalyptic number.

It is an amenable number.

871805710735672 is a deficient number, since it is larger than the sum of its proper divisors (784702194544328).

871805710735672 is a wasteful number, since it uses less digits than its factorization.

871805710735672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120388 (or 120384 counting only the distinct ones).

The product of its (nonzero) digits is 138297600, while the sum is 67.

The spelling of 871805710735672 in words is "eight hundred seventy-one trillion, eight hundred five billion, seven hundred ten million, seven hundred thirty-five thousand, six hundred seventy-two".