13129635872 has 24 divisors (see below), whose sum is σ = 26160409296. Its totient is φ = 6485722432.

The previous prime is 13129635863. The next prime is 13129635889. The reversal of 13129635872 is 27853692131.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2469038 + ... + 2474349.

It is an arithmetic number, because the mean of its divisors is an integer number (1090017054).

Almost surely, 2^13129635872 is an apocalyptic number.

It is an amenable number.

13129635872 is a deficient number, since it is larger than the sum of its proper divisors (13030773424).

13129635872 is an equidigital number, since it uses as much as digits as its factorization.

13129635872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4943480 (or 4943472 counting only the distinct ones).

The product of its digits is 544320, while the sum is 47.

The spelling of 13129635872 in words is "thirteen billion, one hundred twenty-nine million, six hundred thirty-five thousand, eight hundred seventy-two".