871455540512 has 24 divisors (see below), whose sum is σ = 1716875448876. Its totient is φ = 435423680512.

The previous prime is 871455540497. The next prime is 871455540533. The reversal of 871455540512 is 215045554178.

It can be written as a sum of positive squares in 2 ways, for example, as 868109612176 + 3345928336 = 931724^2 + 57844^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9456233 + ... + 9547944.

Almost surely, 2^871455540512 is an apocalyptic number.

It is an amenable number.

871455540512 is a deficient number, since it is larger than the sum of its proper divisors (845419908364).

871455540512 is a wasteful number, since it uses less digits than its factorization.

871455540512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19005620 (or 19005612 counting only the distinct ones).

The product of its (nonzero) digits is 1120000, while the sum is 47.

The spelling of 871455540512 in words is "eight hundred seventy-one billion, four hundred fifty-five million, five hundred forty thousand, five hundred twelve".