871949113729 has 12 divisors (see below), whose sum is σ = 926467016704. Its totient is φ = 820472238144.

The previous prime is 871949113709. The next prime is 871949113811. The reversal of 871949113729 is 927311949178.

It is not a de Polignac number, because 871949113729 - 2²³ = 871940725121 is a prime.

It is a hoax number, since the sum of its digits (61) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (871949113709) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 945952 + ... + 1624414.

Almost surely, 2^871949113729 is an apocalyptic number.

It is an amenable number.

871949113729 is a deficient number, since it is larger than the sum of its proper divisors (54517902975).

871949113729 is a wasteful number, since it uses less digits than its factorization.

871949113729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 682944 (or 682927 counting only the distinct ones).

The product of its digits is 6858432, while the sum is 61.

The spelling of 871949113729 in words is "eight hundred seventy-one billion, nine hundred forty-nine million, one hundred thirteen thousand, seven hundred twenty-nine".