12345622234447 has 2 divisors, whose sum is σ = 12345622234448. Its totient is φ = 12345622234446.

The previous prime is 12345622234423. The next prime is 12345622234459. The reversal of 12345622234447 is 74443222654321.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12345622234447 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12345622234447.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12345622234487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6172811117223 + 6172811117224.

It is an arithmetic number, because the mean of its divisors is an integer number (6172811117224).

Almost surely, 2^{12345622234447} is an apocalyptic number.

12345622234447 is a deficient number, since it is larger than the sum of its proper divisors (1).

12345622234447 is an equidigital number, since it uses as much as digits as its factorization.

12345622234447 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7741440, while the sum is 49.

Adding to 12345622234447 its reverse (74443222654321), we get a palindrome (86788844888768).

The spelling of 12345622234447 in words is "twelve trillion, three hundred forty-five billion, six hundred twenty-two million, two hundred thirty-four thousand, four hundred forty-seven".