12729639195 has 144 divisors (see below), whose sum is σ = 27740905920. Its totient is φ = 5352334848.

The previous prime is 12729639173. The next prime is 12729639199. The reversal of 12729639195 is 59193692721.

12729639195 is a `hidden beast` number, since 12 + 72 + 96 + 391 + 95 = 666.

It is not a de Polignac number, because 12729639195 - 2⁷ = 12729639067 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12729639199) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 10290117 + ... + 10291353.

It is an arithmetic number, because the mean of its divisors is an integer number (192645180).

Almost surely, 2^12729639195 is an apocalyptic number.

12729639195 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12729639195 is an abundant number, since it is smaller than the sum of its proper divisors (15011266725).

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

12729639195 is a wasteful number, since it uses less digits than its factorization.

12729639195 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1634 (or 1624 counting only the distinct ones).

The product of its digits is 1837080, while the sum is 54.

The spelling of 12729639195 in words is "twelve billion, seven hundred twenty-nine million, six hundred thirty-nine thousand, one hundred ninety-five".