12606445238 has 4 divisors (see below), whose sum is σ = 18909667860. Its totient is φ = 6303222618.

The previous prime is 12606445219. The next prime is 12606445259. The reversal of 12606445238 is 83254460621.

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12606445195 and 12606445204.

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, 3151611308 + ... + 3151611311.

It is an arithmetic number, because the mean of its divisors is an integer number (4727416965).

Almost surely, 2^12606445238 is an apocalyptic number.

12606445238 is a deficient number, since it is larger than the sum of its proper divisors (6303222622).

12606445238 is an equidigital number, since it uses as much as digits as its factorization.

12606445238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6303222621.

The product of its (nonzero) digits is 276480, while the sum is 41.

The spelling of 12606445238 in words is "twelve billion, six hundred six million, four hundred forty-five thousand, two hundred thirty-eight".