12543627634171 has 16 divisors (see below), whose sum is σ = 12716649540000. Its totient is φ = 12371344812288.

The previous prime is 12543627634141. The next prime is 12543627634247. The reversal of 12543627634171 is 17143672634521.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12543627634171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12543627634141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85773405 + ... + 85919521.

It is an arithmetic number, because the mean of its divisors is an integer number (794790596250).

Almost surely, 2^{12543627634171} is an apocalyptic number.

12543627634171 is a deficient number, since it is larger than the sum of its proper divisors (173021905829).

12543627634171 is a wasteful number, since it uses less digits than its factorization.

12543627634171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148638.

The product of its digits is 5080320, while the sum is 52.

The spelling of 12543627634171 in words is "twelve trillion, five hundred forty-three billion, six hundred twenty-seven million, six hundred thirty-four thousand, one hundred seventy-one".