12478669211 has 2 divisors, whose sum is σ = 12478669212. Its totient is φ = 12478669210.

The previous prime is 12478669183. The next prime is 12478669241. The reversal of 12478669211 is 11296687421.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12478669211 - 2¹⁴ = 12478652827 is a prime.

It is not a weakly prime, because it can be changed into another prime (12478669241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6239334605 + 6239334606.

It is an arithmetic number, because the mean of its divisors is an integer number (6239334606).

Almost surely, 2^12478669211 is an apocalyptic number.

12478669211 is a deficient number, since it is larger than the sum of its proper divisors (1).

12478669211 is an equidigital number, since it uses as much as digits as its factorization.

12478669211 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 290304, while the sum is 47.

The spelling of 12478669211 in words is "twelve billion, four hundred seventy-eight million, six hundred sixty-nine thousand, two hundred eleven".