12428745799 has 4 divisors (see below), whose sum is σ = 12429103536. Its totient is φ = 12428388064.

The previous prime is 12428745733. The next prime is 12428745809. The reversal of 12428745799 is 99754782421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99754782421 = 7 ⋅14250683203.

It is a cyclic number.

It is not a de Polignac number, because 12428745799 - 2¹⁷ = 12428614727 is a prime.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12428745299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 120379 + ... + 198364.

It is an arithmetic number, because the mean of its divisors is an integer number (3107275884).

Almost surely, 2^12428745799 is an apocalyptic number.

12428745799 is a deficient number, since it is larger than the sum of its proper divisors (357737).

12428745799 is an equidigital number, since it uses as much as digits as its factorization.

12428745799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 357736.

The product of its digits is 10160640, while the sum is 58.

The spelling of 12428745799 in words is "twelve billion, four hundred twenty-eight million, seven hundred forty-five thousand, seven hundred ninety-nine".