12913571872 has 24 divisors (see below), whose sum is σ = 26110721196. Its totient is φ = 6282277632.

The previous prime is 12913571851. The next prime is 12913571873. The reversal of 12913571872 is 27817531921.

It can be written as a sum of positive squares in 2 ways, for example, as 9178406416 + 3735165456 = 95804^2 + 61116^2 .

It is not an unprimeable number, because it can be changed into a prime (12913571873) by changing a digit.

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, 5452183 + ... + 5454550.

Almost surely, 2^12913571872 is an apocalyptic number.

It is an amenable number.

12913571872 is an abundant number, since it is smaller than the sum of its proper divisors (13197149324).

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

12913571872 is a wasteful number, since it uses less digits than its factorization.

12913571872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10906780 (or 10906772 counting only the distinct ones).

The product of its digits is 211680, while the sum is 46.

The spelling of 12913571872 in words is "twelve billion, nine hundred thirteen million, five hundred seventy-one thousand, eight hundred seventy-two".