12429380785 has 4 divisors (see below), whose sum is σ = 14915256948. Its totient is φ = 9943504624.

The previous prime is 12429380737. The next prime is 12429380797. The reversal of 12429380785 is 58708392421.

12429380785 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7714635889 + 4714744896 = 87833^2 + 68664^2 .

It is a cyclic number.

It is not a de Polignac number, because 12429380785 - 2¹¹ = 12429378737 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1242938074 + ... + 1242938083.

It is an arithmetic number, because the mean of its divisors is an integer number (3728814237).

Almost surely, 2^12429380785 is an apocalyptic number.

It is an amenable number.

12429380785 is a deficient number, since it is larger than the sum of its proper divisors (2485876163).

12429380785 is an equidigital number, since it uses as much as digits as its factorization.

12429380785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2485876162.

The product of its (nonzero) digits is 967680, while the sum is 49.

The spelling of 12429380785 in words is "twelve billion, four hundred twenty-nine million, three hundred eighty thousand, seven hundred eighty-five".