871428580081 has 4 divisors (see below), whose sum is σ = 871450873972. Its totient is φ = 871406286192.

The previous prime is 871428580073. The next prime is 871428580117. The reversal of 871428580081 is 180085824178.

871428580081 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 277628879025 + 593799701056 = 526905^2 + 770584^2 .

It is a cyclic number.

It is not a de Polignac number, because 871428580081 - 2³ = 871428580073 is a prime.

It is a super-2 number, since 2×871428580081² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (871428580031) 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, 11088210 + ... + 11166523.

It is an arithmetic number, because the mean of its divisors is an integer number (217862718493).

Almost surely, 2^871428580081 is an apocalyptic number.

It is an amenable number.

871428580081 is a deficient number, since it is larger than the sum of its proper divisors (22293891).

871428580081 is a wasteful number, since it uses less digits than its factorization.

871428580081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22293890.

The product of its (nonzero) digits is 1146880, while the sum is 52.

The spelling of 871428580081 in words is "eight hundred seventy-one billion, four hundred twenty-eight million, five hundred eighty thousand, eighty-one".