12545489896 has 16 divisors (see below), whose sum is σ = 23524022340. Its totient is φ = 6272417280.

The previous prime is 12545489857. The next prime is 12545489941. The reversal of 12545489896 is 69898454521.

It can be written as a sum of positive squares in 2 ways, for example, as 12081087396 + 464402500 = 109914^2 + 21550^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 218266 + ... + 269686.

Almost surely, 2^12545489896 is an apocalyptic number.

It is an amenable number.

12545489896 is a deficient number, since it is larger than the sum of its proper divisors (10978532444).

12545489896 is a wasteful number, since it uses less digits than its factorization.

12545489896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81924 (or 81920 counting only the distinct ones).

The product of its digits is 24883200, while the sum is 61.

The spelling of 12545489896 in words is "twelve billion, five hundred forty-five million, four hundred eighty-nine thousand, eight hundred ninety-six".