12447267949169 has 2 divisors, whose sum is σ = 12447267949170. Its totient is φ = 12447267949168.

The previous prime is 12447267949153. The next prime is 12447267949201. The reversal of 12447267949169 is 96194976274421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9829554284944 + 2617713664225 = 3135212^2 + 1617935^2 .

It is a cyclic number.

It is not a de Polignac number, because 12447267949169 - 2⁴ = 12447267949153 is a prime.

It is a super-2 number, since 2×12447267949169² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12443267949169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6223633974584 + 6223633974585.

It is an arithmetic number, because the mean of its divisors is an integer number (6223633974585).

Almost surely, 2^{12447267949169} is an apocalyptic number.

It is an amenable number.

12447267949169 is a deficient number, since it is larger than the sum of its proper divisors (1).

12447267949169 is an equidigital number, since it uses as much as digits as its factorization.

12447267949169 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 329204736, while the sum is 71.

The spelling of 12447267949169 in words is "twelve trillion, four hundred forty-seven billion, two hundred sixty-seven million, nine hundred forty-nine thousand, one hundred sixty-nine".