871028711787531 has 16 divisors (see below), whose sum is σ = 1268239715055360. Its totient is φ = 527359163317920.

The previous prime is 871028711787469. The next prime is 871028711787601. The reversal of 871028711787531 is 135787117820178.

It is not a de Polignac number, because 871028711787531 - 2⁶ = 871028711787467 is a prime.

It is a super-2 number, since 2×871028711787531² (a number of 31 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (871028711787331) 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, 13425608176 + ... + 13425673053.

It is an arithmetic number, because the mean of its divisors is an integer number (79264982190960).

Almost surely, 2^{871028711787531} is an apocalyptic number.

871028711787531 is a deficient number, since it is larger than the sum of its proper divisors (397211003267829).

871028711787531 is a wasteful number, since it uses less digits than its factorization.

871028711787531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26851282226.

The product of its (nonzero) digits is 36879360, while the sum is 66.

The spelling of 871028711787531 in words is "eight hundred seventy-one trillion, twenty-eight billion, seven hundred eleven million, seven hundred eighty-seven thousand, five hundred thirty-one".