871028252712851 has 4 divisors (see below), whose sum is σ = 871029213855000. Its totient is φ = 871027291570704.

The previous prime is 871028252712847. The next prime is 871028252712857. The reversal of 871028252712851 is 158217252820178.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 871028252712851 - 2² = 871028252712847 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (871028252712857) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 479210426 + ... + 481024623.

It is an arithmetic number, because the mean of its divisors is an integer number (217757303463750).

Almost surely, 2^{871028252712851} is an apocalyptic number.

871028252712851 is a deficient number, since it is larger than the sum of its proper divisors (961142149).

871028252712851 is an equidigital number, since it uses as much as digits as its factorization.

871028252712851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 961142148.

The product of its (nonzero) digits is 10035200, while the sum is 59.

The spelling of 871028252712851 in words is "eight hundred seventy-one trillion, twenty-eight billion, two hundred fifty-two million, seven hundred twelve thousand, eight hundred fifty-one".