12729335312 has 20 divisors (see below), whose sum is σ = 24719280960. Its totient is φ = 6350166048.

The previous prime is 12729335273. The next prime is 12729335363. The reversal of 12729335312 is 21353392721.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 899108 + ... + 913155.

It is an arithmetic number, because the mean of its divisors is an integer number (1235964048).

Almost surely, 2^12729335312 is an apocalyptic number.

It is an amenable number.

12729335312 is a deficient number, since it is larger than the sum of its proper divisors (11989945648).

12729335312 is a wasteful number, since it uses less digits than its factorization.

12729335312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1812710 (or 1812704 counting only the distinct ones).

The product of its digits is 68040, while the sum is 38.

The spelling of 12729335312 in words is "twelve billion, seven hundred twenty-nine million, three hundred thirty-five thousand, three hundred twelve".