12886449553 has 4 divisors (see below), whose sum is σ = 13564683760. Its totient is φ = 12208215348.

The previous prime is 12886449529. The next prime is 12886449557. The reversal of 12886449553 is 35594468821.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12886449553 - 2²⁹ = 12349578641 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12886449494 and 12886449503.

It is not an unprimeable number, because it can be changed into a prime (12886449557) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 339117075 + ... + 339117112.

It is an arithmetic number, because the mean of its divisors is an integer number (3391170940).

Almost surely, 2^12886449553 is an apocalyptic number.

It is an amenable number.

12886449553 is a deficient number, since it is larger than the sum of its proper divisors (678234207).

12886449553 is an equidigital number, since it uses as much as digits as its factorization.

12886449553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 678234206.

The product of its digits is 8294400, while the sum is 55.

The spelling of 12886449553 in words is "twelve billion, eight hundred eighty-six million, four hundred forty-nine thousand, five hundred fifty-three".