12705678229 has 8 divisors (see below), whose sum is σ = 13456649880. Its totient is φ = 11955104256.

The previous prime is 12705678221. The next prime is 12705678247. The reversal of 12705678229 is 92287650721.

12705678229 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 55502500 + 12650175729 = 7450^2 + 112473^2 .

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 12705678229 - 2³ = 12705678221 is a prime.

It is a super-2 number, since 2×12705678229² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12705678221) 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, 32334 + ... + 162655.

It is an arithmetic number, because the mean of its divisors is an integer number (1682081235).

Almost surely, 2^12705678229 is an apocalyptic number.

It is an amenable number.

12705678229 is a deficient number, since it is larger than the sum of its proper divisors (750971651).

12705678229 is a wasteful number, since it uses less digits than its factorization.

12705678229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198839.

The product of its (nonzero) digits is 846720, while the sum is 49.

The spelling of 12705678229 in words is "twelve billion, seven hundred five million, six hundred seventy-eight thousand, two hundred twenty-nine".