12147871449 has 16 divisors (see below), whose sum is σ = 18513038720. Its totient is φ = 6940892160.

The previous prime is 12147871447. The next prime is 12147871459. The reversal of 12147871449 is 94417874121.

12147871449 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12147871449 - 2¹ = 12147871447 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12147871398 and 12147871407.

It is not an unprimeable number, because it can be changed into a prime (12147871447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 212379 + ... + 263439.

It is an arithmetic number, because the mean of its divisors is an integer number (1157064920).

Almost surely, 2^12147871449 is an apocalyptic number.

It is an amenable number.

12147871449 is a deficient number, since it is larger than the sum of its proper divisors (6365167271).

12147871449 is a wasteful number, since it uses less digits than its factorization.

12147871449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62400.

The product of its digits is 451584, while the sum is 48.

The spelling of 12147871449 in words is "twelve billion, one hundred forty-seven million, eight hundred seventy-one thousand, four hundred forty-nine".