12049531447 has 2 divisors, whose sum is σ = 12049531448. Its totient is φ = 12049531446.

The previous prime is 12049531441. The next prime is 12049531463. The reversal of 12049531447 is 74413594021.

12049531447 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12049531447 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12049531441) 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 as a sum of consecutive naturals, namely, 6024765723 + 6024765724.

It is an arithmetic number, because the mean of its divisors is an integer number (6024765724).

Almost surely, 2^12049531447 is an apocalyptic number.

12049531447 is a deficient number, since it is larger than the sum of its proper divisors (1).

12049531447 is an equidigital number, since it uses as much as digits as its factorization.

12049531447 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 120960, while the sum is 40.

The spelling of 12049531447 in words is "twelve billion, forty-nine million, five hundred thirty-one thousand, four hundred forty-seven".