12162978343 has 4 divisors (see below), whose sum is σ = 12166252560. Its totient is φ = 12159704128.

The previous prime is 12162978301. The next prime is 12162978349. The reversal of 12162978343 is 34387926121.

12162978343 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34387926121 = 67261 ⋅511261.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12162978343 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12162978293 and 12162978302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12162978349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1631530 + ... + 1638967.

It is an arithmetic number, because the mean of its divisors is an integer number (3041563140).

Almost surely, 2^12162978343 is an apocalyptic number.

12162978343 is a deficient number, since it is larger than the sum of its proper divisors (3274217).

12162978343 is an equidigital number, since it uses as much as digits as its factorization.

12162978343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3274216.

The product of its digits is 435456, while the sum is 46.

The spelling of 12162978343 in words is "twelve billion, one hundred sixty-two million, nine hundred seventy-eight thousand, three hundred forty-three".