871031788873245 has 64 divisors (see below), whose sum is σ = 1616141051965440. Its totient is φ = 444266108345664.

The previous prime is 871031788873243. The next prime is 871031788873319. The reversal of 871031788873245 is 542378887130178.

871031788873245 is a `hidden beast` number, since 8 + 71 + 0 + 3 + 178 + 88 + 73 + 245 = 666.

It is not a de Polignac number, because 871031788873245 - 2¹ = 871031788873243 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (871031788873243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 11269929 + ... + 43232798.

It is an arithmetic number, because the mean of its divisors is an integer number (25252203936960).

Almost surely, 2^{871031788873245} is an apocalyptic number.

It is an amenable number.

871031788873245 is a deficient number, since it is larger than the sum of its proper divisors (745109263092195).

871031788873245 is a wasteful number, since it uses less digits than its factorization.

871031788873245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54507911 (or 54507905 counting only the distinct ones).

The product of its (nonzero) digits is 505774080, while the sum is 72.

The spelling of 871031788873245 in words is "eight hundred seventy-one trillion, thirty-one billion, seven hundred eighty-eight million, eight hundred seventy-three thousand, two hundred forty-five".