12429429489549 has 24 divisors (see below), whose sum is σ = 18590416299000. Its totient is φ = 7992925301760.

The previous prime is 12429429489541. The next prime is 12429429489623. The reversal of 12429429489549 is 94598492492421.

It is a happy number.

12429429489549 is a `hidden beast` number, since 1 + 2 + 4 + 2 + 94 + 2 + 9 + 489 + 54 + 9 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 6765591155625 + 5663838333924 = 2601075^2 + 2379882^2 .

It is not a de Polignac number, because 12429429489549 - 2³ = 12429429489541 is a prime.

It is a Smith number, since the sum of its digits (72) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12429429489541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22425132 + ... + 22972709.

It is an arithmetic number, because the mean of its divisors is an integer number (774600679125).

Almost surely, 2^{12429429489549} is an apocalyptic number.

It is an amenable number.

12429429489549 is a deficient number, since it is larger than the sum of its proper divisors (6160986809451).

12429429489549 is a wasteful number, since it uses less digits than its factorization.

12429429489549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45398925 (or 45398922 counting only the distinct ones).

The product of its digits is 537477120, while the sum is 72.

The spelling of 12429429489549 in words is "twelve trillion, four hundred twenty-nine billion, four hundred twenty-nine million, four hundred eighty-nine thousand, five hundred forty-nine".