12543217671 has 8 divisors (see below), whose sum is σ = 17176298224. Its totient is φ = 8136141120.

The previous prime is 12543217633. The next prime is 12543217723. The reversal of 12543217671 is 17671234521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12543217671 - 2¹³ = 12543209479 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 (12543017671) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56500870 + ... + 56501091.

It is an arithmetic number, because the mean of its divisors is an integer number (2147037278).

Almost surely, 2^12543217671 is an apocalyptic number.

12543217671 is a deficient number, since it is larger than the sum of its proper divisors (4633080553).

12543217671 is a wasteful number, since it uses less digits than its factorization.

12543217671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113002001.

The product of its digits is 70560, while the sum is 39.

The spelling of 12543217671 in words is "twelve billion, five hundred forty-three million, two hundred seventeen thousand, six hundred seventy-one".