12878164361 has 2 divisors, whose sum is σ = 12878164362. Its totient is φ = 12878164360.

The previous prime is 12878164283. The next prime is 12878164379. The reversal of 12878164361 is 16346187821.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12280850761 + 597313600 = 110819^2 + 24440^2 .

It is a cyclic number.

It is not a de Polignac number, because 12878164361 - 2²⁶ = 12811055497 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (12878154361) 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, 6439082180 + 6439082181.

It is an arithmetic number, because the mean of its divisors is an integer number (6439082181).

Almost surely, 2^12878164361 is an apocalyptic number.

It is an amenable number.

12878164361 is a deficient number, since it is larger than the sum of its proper divisors (1).

12878164361 is an equidigital number, since it uses as much as digits as its factorization.

12878164361 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 387072, while the sum is 47.

The spelling of 12878164361 in words is "twelve billion, eight hundred seventy-eight million, one hundred sixty-four thousand, three hundred sixty-one".