12642472717 has 8 divisors (see below), whose sum is σ = 14449277376. Its totient is φ = 10835852352.

The previous prime is 12642472709. The next prime is 12642472771. The reversal of 12642472717 is 71727424621.

12642472717 is digitally balanced in base 2, 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 a cyclic number.

It is not a de Polignac number, because 12642472717 - 2³ = 12642472709 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12642472417) by changing a digit.

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, 166053 + ... + 229909.

It is an arithmetic number, because the mean of its divisors is an integer number (1806159672).

Almost surely, 2^12642472717 is an apocalyptic number.

It is an amenable number.

12642472717 is a deficient number, since it is larger than the sum of its proper divisors (1806804659).

12642472717 is an equidigital number, since it uses as much as digits as its factorization.

12642472717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92147.

The product of its digits is 263424, while the sum is 43.

The spelling of 12642472717 in words is "twelve billion, six hundred forty-two million, four hundred seventy-two thousand, seven hundred seventeen".