12665424143 has 4 divisors (see below), whose sum is σ = 12667159128. Its totient is φ = 12663689160.

The previous prime is 12665424119. The next prime is 12665424173. The reversal of 12665424143 is 34142456621.

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 12665424143 - 2²⁰ = 12664375567 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12665424097 and 12665424106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12665424173) 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, 856496 + ... + 871157.

It is an arithmetic number, because the mean of its divisors is an integer number (3166789782).

Almost surely, 2^12665424143 is an apocalyptic number.

12665424143 is a deficient number, since it is larger than the sum of its proper divisors (1734985).

12665424143 is an equidigital number, since it uses as much as digits as its factorization.

12665424143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1734984.

The product of its digits is 138240, while the sum is 38.

The spelling of 12665424143 in words is "twelve billion, six hundred sixty-five million, four hundred twenty-four thousand, one hundred forty-three".