12717641872 has 80 divisors (see below), whose sum is σ = 27493240320. Its totient is φ = 5659315200.

The previous prime is 12717641869. The next prime is 12717641921. The reversal of 12717641872 is 27814671721.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1808379 + ... + 1815397.

It is an arithmetic number, because the mean of its divisors is an integer number (343665504).

Almost surely, 2^12717641872 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12717641872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13746620160).

12717641872 is an abundant number, since it is smaller than the sum of its proper divisors (14775598448).

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

12717641872 is a wasteful number, since it uses less digits than its factorization.

12717641872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7352 (or 7346 counting only the distinct ones).

The product of its digits is 263424, while the sum is 46.

The spelling of 12717641872 in words is "twelve billion, seven hundred seventeen million, six hundred forty-one thousand, eight hundred seventy-two".