12546871173 has 12 divisors (see below), whose sum is σ = 18140225740. Its totient is φ = 8356749696.

The previous prime is 12546871171. The next prime is 12546871177. The reversal of 12546871173 is 37117864521.

12546871173 is a `hidden beast` number, since 12 + 5 + 468 + 7 + 1 + 173 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1701315009 + 10845556164 = 41247^2 + 104142^2 .

It is not a de Polignac number, because 12546871173 - 2¹ = 12546871171 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12546871171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 642436 + ... + 661677.

Almost surely, 2^12546871173 is an apocalyptic number.

It is an amenable number.

12546871173 is a deficient number, since it is larger than the sum of its proper divisors (5593354567).

12546871173 is a wasteful number, since it uses less digits than its factorization.

12546871173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1305188 (or 1305185 counting only the distinct ones).

The product of its digits is 282240, while the sum is 45.

The spelling of 12546871173 in words is "twelve billion, five hundred forty-six million, eight hundred seventy-one thousand, one hundred seventy-three".