12278892146 has 16 divisors (see below), whose sum is σ = 19314466200. Its totient is φ = 5846537088.

The previous prime is 12278892121. The next prime is 12278892151. The reversal of 12278892146 is 64129887221.

12278892146 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 4 ways, for example, as 9829731025 + 2449161121 = 99145^2 + 49489^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12278892094 and 12278892103.

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 7 ways as a sum of consecutive naturals, for example, 1445801 + ... + 1454268.

Almost surely, 2^12278892146 is an apocalyptic number.

12278892146 is a deficient number, since it is larger than the sum of its proper divisors (7035574054).

12278892146 is a wasteful number, since it uses less digits than its factorization.

12278892146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2900173.

The product of its digits is 774144, while the sum is 50.

The spelling of 12278892146 in words is "twelve billion, two hundred seventy-eight million, eight hundred ninety-two thousand, one hundred forty-six".