12423244443 has 4 divisors (see below), whose sum is σ = 16564325928. Its totient is φ = 8282162960.

The previous prime is 12423244439. The next prime is 12423244459. The reversal of 12423244443 is 34444232421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34444232421 = 3 ⋅11481410807.

It is a cyclic number.

It is not a de Polignac number, because 12423244443 - 2² = 12423244439 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12423244433) 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, 2070540738 + ... + 2070540743.

It is an arithmetic number, because the mean of its divisors is an integer number (4141081482).

Almost surely, 2^12423244443 is an apocalyptic number.

12423244443 is a deficient number, since it is larger than the sum of its proper divisors (4141081485).

12423244443 is an equidigital number, since it uses as much as digits as its factorization.

12423244443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4141081484.

The product of its digits is 73728, while the sum is 33.

Adding to 12423244443 its reverse (34444232421), we get a palindrome (46867476864).

The spelling of 12423244443 in words is "twelve billion, four hundred twenty-three million, two hundred forty-four thousand, four hundred forty-three".