871348437181045 has 4 divisors (see below), whose sum is σ = 1045618124617260. Its totient is φ = 697078749744832.

The previous prime is 871348437181037. The next prime is 871348437181049. The reversal of 871348437181045 is 540181734843178.

871348437181045 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 588065943505041 + 283282493676004 = 24250071^2 + 16830998^2 .

It is a cyclic number.

It is not a de Polignac number, because 871348437181045 - 2³ = 871348437181037 is a prime.

It is a super-2 number, since 2×871348437181045² (a number of 31 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (871348437181049) 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, 87134843718100 + ... + 87134843718109.

It is an arithmetic number, because the mean of its divisors is an integer number (261404531154315).

Almost surely, 2^{871348437181045} is an apocalyptic number.

It is an amenable number.

871348437181045 is a deficient number, since it is larger than the sum of its proper divisors (174269687436215).

871348437181045 is a wasteful number, since it uses less digits than its factorization.

871348437181045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174269687436214.

The product of its (nonzero) digits is 72253440, while the sum is 64.

The spelling of 871348437181045 in words is "eight hundred seventy-one trillion, three hundred forty-eight billion, four hundred thirty-seven million, one hundred eighty-one thousand, forty-five".