12821712906 has 16 divisors (see below), whose sum is σ = 25813251648. Its totient is φ = 4245600000.

The previous prime is 12821712833. The next prime is 12821712913. The reversal of 12821712906 is 60921712821.

12821712906 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

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, 7075095 + ... + 7076906.

It is an arithmetic number, because the mean of its divisors is an integer number (1613328228).

Almost surely, 2^12821712906 is an apocalyptic number.

12821712906 is an abundant number, since it is smaller than the sum of its proper divisors (12991538742).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12821712906 is a wasteful number, since it uses less digits than its factorization.

12821712906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14152157.

The product of its (nonzero) digits is 24192, while the sum is 39.

The spelling of 12821712906 in words is "twelve billion, eight hundred twenty-one million, seven hundred twelve thousand, nine hundred six".