12282773378 has 6 divisors (see below), whose sum is σ = 18424395171.
Its totient is φ = 6141308322.
The previous prime is 12282773369. The next prime is 12282773389. The reversal of 12282773378 is 87337728221.
12282773378 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It can be written as a sum of positive squares in only one way, i.e., 6141386689 + 6141386689 = 78367^2 + 78367^2
It is an ABA number since it can be written as A⋅BA, here for A=2, B=78367.
It is a Duffinian number.
It is an unprimeable number.
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 2 ways as a sum of consecutive naturals, for example, 117551 + ... + 195917.
Almost surely, 212282773378 is an apocalyptic number.
12282773378 is a deficient number, since it is larger than the sum of its proper divisors (6141621793).
12282773378 is an frugal number, since it uses more digits than its factorization.
12282773378 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 156736 (or 78369 counting only the distinct ones).
The product of its digits is 1580544, while the sum is 50.
Multiplying 12282773378 by its sum of digits (50), we get a square (614138668900 = 7836702).
The spelling of 12282773378 in words is "twelve billion, two hundred eighty-two million, seven hundred seventy-three thousand, three hundred seventy-eight".