12278859379 has 2 divisors, whose sum is σ = 12278859380. Its totient is φ = 12278859378.

The previous prime is 12278859361. The next prime is 12278859403. The reversal of 12278859379 is 97395887221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12278859379 - 2⁷ = 12278859251 is a prime.

It is not a weakly prime, because it can be changed into another prime (12278859779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6139429689 + 6139429690.

It is an arithmetic number, because the mean of its divisors is an integer number (6139429690).

Almost surely, 2^12278859379 is an apocalyptic number.

12278859379 is a deficient number, since it is larger than the sum of its proper divisors (1).

12278859379 is an equidigital number, since it uses as much as digits as its factorization.

12278859379 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15240960, while the sum is 61.

The spelling of 12278859379 in words is "twelve billion, two hundred seventy-eight million, eight hundred fifty-nine thousand, three hundred seventy-nine".