12729459867 has 8 divisors (see below), whose sum is σ = 17137396224. Its totient is φ = 8403915048.

The previous prime is 12729459851. The next prime is 12729459881. The reversal of 12729459867 is 76895492721.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12729459867 - 2⁴ = 12729459851 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12729459867.

It is not an unprimeable number, because it can be changed into a prime (12729459817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20597523 + ... + 20598140.

It is an arithmetic number, because the mean of its divisors is an integer number (2142174528).

Almost surely, 2^12729459867 is an apocalyptic number.

12729459867 is a deficient number, since it is larger than the sum of its proper divisors (4407936357).

12729459867 is a wasteful number, since it uses less digits than its factorization.

12729459867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41195769.

The product of its digits is 15240960, while the sum is 60.

The spelling of 12729459867 in words is "twelve billion, seven hundred twenty-nine million, four hundred fifty-nine thousand, eight hundred sixty-seven".