12543355211 has 4 divisors (see below), whose sum is σ = 12570215112. Its totient is φ = 12516495312.

The previous prime is 12543355207. The next prime is 12543355241. The reversal of 12543355211 is 11255334521.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12543355211 - 2² = 12543355207 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12543355241) 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, 13429250 + ... + 13430183.

It is an arithmetic number, because the mean of its divisors is an integer number (3142553778).

Almost surely, 2^12543355211 is an apocalyptic number.

12543355211 is a deficient number, since it is larger than the sum of its proper divisors (26859901).

12543355211 is an equidigital number, since it uses as much as digits as its factorization.

12543355211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26859900.

The product of its digits is 18000, while the sum is 32.

Adding to 12543355211 its reverse (11255334521), we get a palindrome (23798689732).

The spelling of 12543355211 in words is "twelve billion, five hundred forty-three million, three hundred fifty-five thousand, two hundred eleven".