871672126481 has 4 divisors (see below), whose sum is σ = 938723828532. Its totient is φ = 804620424432.

The previous prime is 871672126471. The next prime is 871672126487. The reversal of 871672126481 is 184621276178.

871672126481 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 250545297025 + 621126829456 = 500545^2 + 788116^2 .

It is a cyclic number.

It is not a de Polignac number, because 871672126481 - 2¹⁴ = 871672110097 is a prime.

It is a super-2 number, since 2×871672126481² (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 (871672126487) 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, 33525851006 + ... + 33525851031.

It is an arithmetic number, because the mean of its divisors is an integer number (234680957133).

Almost surely, 2^871672126481 is an apocalyptic number.

It is an amenable number.

871672126481 is a deficient number, since it is larger than the sum of its proper divisors (67051702051).

871672126481 is a wasteful number, since it uses less digits than its factorization.

871672126481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67051702050.

The product of its digits is 1806336, while the sum is 53.

The spelling of 871672126481 in words is "eight hundred seventy-one billion, six hundred seventy-two million, one hundred twenty-six thousand, four hundred eighty-one".