12447136426 has 8 divisors (see below), whose sum is σ = 18987157440. Its totient is φ = 6118083948.

The previous prime is 12447136423. The next prime is 12447136433. The reversal of 12447136426 is 62463174421.

It is a happy number.

12447136426 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (12447136421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52741986 + ... + 52742221.

It is an arithmetic number, because the mean of its divisors is an integer number (2373394680).

Almost surely, 2^12447136426 is an apocalyptic number.

12447136426 is a deficient number, since it is larger than the sum of its proper divisors (6540021014).

12447136426 is a wasteful number, since it uses less digits than its factorization.

12447136426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105484268.

The product of its digits is 193536, while the sum is 40.

The spelling of 12447136426 in words is "twelve billion, four hundred forty-seven million, one hundred thirty-six thousand, four hundred twenty-six".