12813721288 has 32 divisors (see below), whose sum is σ = 24903774720. Its totient is φ = 6174432000.

The previous prime is 12813721273. The next prime is 12813721309. The reversal of 12813721288 is 88212731821.

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, 47428 + ... + 166963.

It is an arithmetic number, because the mean of its divisors is an integer number (778242960).

Almost surely, 2^12813721288 is an apocalyptic number.

It is an amenable number.

12813721288 is a deficient number, since it is larger than the sum of its proper divisors (12090053432).

12813721288 is a wasteful number, since it uses less digits than its factorization.

12813721288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214669 (or 214665 counting only the distinct ones).

The product of its digits is 86016, while the sum is 43.

The spelling of 12813721288 in words is "twelve billion, eight hundred thirteen million, seven hundred twenty-one thousand, two hundred eighty-eight".