12423441145 has 32 divisors (see below), whose sum is σ = 15941173248. Its totient is φ = 9272818368.

The previous prime is 12423441131. The next prime is 12423441181. The reversal of 12423441145 is 54114432421.

It is a happy number.

It is not a de Polignac number, because 12423441145 - 2¹¹ = 12423439097 is a prime.

It is a super-2 number, since 2×12423441145² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1655592 + ... + 1663078.

It is an arithmetic number, because the mean of its divisors is an integer number (498161664).

Almost surely, 2^12423441145 is an apocalyptic number.

It is an amenable number.

12423441145 is a deficient number, since it is larger than the sum of its proper divisors (3517732103).

12423441145 is a wasteful number, since it uses less digits than its factorization.

12423441145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7869.

The product of its digits is 15360, while the sum is 31.

Adding to 12423441145 its reverse (54114432421), we get a palindrome (66537873566).

The spelling of 12423441145 in words is "twelve billion, four hundred twenty-three million, four hundred forty-one thousand, one hundred forty-five".