12243422439991 has 2 divisors, whose sum is σ = 12243422439992. Its totient is φ = 12243422439990.

The previous prime is 12243422439971. The next prime is 12243422440061. The reversal of 12243422439991 is 19993422434221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12243422439991 - 2⁷ = 12243422439863 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12243422439901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6121711219995 + 6121711219996.

It is an arithmetic number, because the mean of its divisors is an integer number (6121711219996).

Almost surely, 2^{12243422439991} is an apocalyptic number.

12243422439991 is a deficient number, since it is larger than the sum of its proper divisors (1).

12243422439991 is an equidigital number, since it uses as much as digits as its factorization.

12243422439991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6718464, while the sum is 55.

The spelling of 12243422439991 in words is "twelve trillion, two hundred forty-three billion, four hundred twenty-two million, four hundred thirty-nine thousand, nine hundred ninety-one".