12985427872 has 24 divisors (see below), whose sum is σ = 25567712100. Its totient is φ = 6492040704.

The previous prime is 12985427857. The next prime is 12985427881. The reversal of 12985427872 is 27872458921.

It can be written as a sum of positive squares in 2 ways, for example, as 10256828176 + 2728599696 = 101276^2 + 52236^2 .

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 465454 + ... + 492562.

Almost surely, 2^12985427872 is an apocalyptic number.

It is an amenable number.

12985427872 is a deficient number, since it is larger than the sum of its proper divisors (12582284228).

12985427872 is a wasteful number, since it uses less digits than its factorization.

12985427872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42088 (or 42080 counting only the distinct ones).

The product of its digits is 4515840, while the sum is 55.

The spelling of 12985427872 in words is "twelve billion, nine hundred eighty-five million, four hundred twenty-seven thousand, eight hundred seventy-two".