12323544431005 has 16 divisors (see below), whose sum is σ = 15141073147200. Its totient is φ = 9623892233088.

The previous prime is 12323544430999. The next prime is 12323544431017. The reversal of 12323544431005 is 50013444532321.

It is a cyclic number.

It is not a de Polignac number, because 12323544431005 - 2³ = 12323544430997 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16503112 + ... + 17233681.

It is an arithmetic number, because the mean of its divisors is an integer number (946317071700).

Almost surely, 2^{12323544431005} is an apocalyptic number.

It is an amenable number.

12323544431005 is a deficient number, since it is larger than the sum of its proper divisors (2817528716195).

12323544431005 is a wasteful number, since it uses less digits than its factorization.

12323544431005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33738540.

The product of its (nonzero) digits is 172800, while the sum is 37.

Adding to 12323544431005 its reverse (50013444532321), we get a palindrome (62336988963326).

The spelling of 12323544431005 in words is "twelve trillion, three hundred twenty-three billion, five hundred forty-four million, four hundred thirty-one thousand, five".