12378278606 has 4 divisors (see below), whose sum is σ = 18567417912. Its totient is φ = 6189139302.

The previous prime is 12378278569. The next prime is 12378278651. The reversal of 12378278606 is 60687287321.

12378278606 is digitally balanced in base 5, 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: 60687287321 = 53 ⋅1145043157.

It is a Curzon number.

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, 3094569650 + ... + 3094569653.

It is an arithmetic number, because the mean of its divisors is an integer number (4641854478).

Almost surely, 2^12378278606 is an apocalyptic number.

12378278606 is a deficient number, since it is larger than the sum of its proper divisors (6189139306).

12378278606 is an equidigital number, since it uses as much as digits as its factorization.

12378278606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6189139305.

The product of its (nonzero) digits is 1354752, while the sum is 50.

The spelling of 12378278606 in words is "twelve billion, three hundred seventy-eight million, two hundred seventy-eight thousand, six hundred six".