12331545404443 has 4 divisors (see below), whose sum is σ = 12980574109960. Its totient is φ = 11682516698928.

The previous prime is 12331545404417. The next prime is 12331545404491. The reversal of 12331545404443 is 34440454513321.

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 12331545404443 - 2¹⁷ = 12331545273371 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12331545404443.

It is not an unprimeable number, because it can be changed into a prime (12331545402443) 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, 324514352730 + ... + 324514352767.

It is an arithmetic number, because the mean of its divisors is an integer number (3245143527490).

Almost surely, 2^{12331545404443} is an apocalyptic number.

12331545404443 is a deficient number, since it is larger than the sum of its proper divisors (649028705517).

12331545404443 is an equidigital number, since it uses as much as digits as its factorization.

12331545404443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 649028705516.

The product of its (nonzero) digits is 1382400, while the sum is 43.

Adding to 12331545404443 its reverse (34440454513321), we get a palindrome (46771999917764).

The spelling of 12331545404443 in words is "twelve trillion, three hundred thirty-one billion, five hundred forty-five million, four hundred four thousand, four hundred forty-three".