12278126774 has 4 divisors (see below), whose sum is σ = 18417190164. Its totient is φ = 6139063386.

The previous prime is 12278126747. The next prime is 12278126821. The reversal of 12278126774 is 47762187221.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3069531692 + ... + 3069531695.

It is an arithmetic number, because the mean of its divisors is an integer number (4604297541).

Almost surely, 2^12278126774 is an apocalyptic number.

12278126774 is a deficient number, since it is larger than the sum of its proper divisors (6139063390).

12278126774 is an equidigital number, since it uses as much as digits as its factorization.

12278126774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6139063389.

The product of its digits is 526848, while the sum is 47.

The spelling of 12278126774 in words is "twelve billion, two hundred seventy-eight million, one hundred twenty-six thousand, seven hundred seventy-four".