12947338312 has 32 divisors (see below), whose sum is σ = 25876827000. Its totient is φ = 6051963904.

The previous prime is 12947338237. The next prime is 12947338333. The reversal of 12947338312 is 21383374921.

It can be written as a sum of positive squares in 4 ways, for example, as 9819620836 + 3127717476 = 99094^2 + 55926^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 299203 + ... + 339730.

Almost surely, 2^12947338312 is an apocalyptic number.

It is an amenable number.

12947338312 is a deficient number, since it is larger than the sum of its proper divisors (12929488688).

12947338312 is a wasteful number, since it uses less digits than its factorization.

12947338312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 639105 (or 639101 counting only the distinct ones).

The product of its digits is 217728, while the sum is 43.

The spelling of 12947338312 in words is "twelve billion, nine hundred forty-seven million, three hundred thirty-eight thousand, three hundred twelve".