12818717959 has 4 divisors (see below), whose sum is σ = 13060580616. Its totient is φ = 12576855304.

The previous prime is 12818717957. The next prime is 12818717963. The reversal of 12818717959 is 95971781821.

12818717959 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, and also an emirpimes, since its reverse is a distinct semiprime: 95971781821 = 1933 ⋅49649137.

It is a cyclic number.

It is not a de Polignac number, because 12818717959 - 2¹ = 12818717957 is a prime.

It is a super-2 number, since 2×12818717959² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12818717957) 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 3 ways as a sum of consecutive naturals, for example, 120931249 + ... + 120931354.

It is an arithmetic number, because the mean of its divisors is an integer number (3265145154).

Almost surely, 2^12818717959 is an apocalyptic number.

12818717959 is a deficient number, since it is larger than the sum of its proper divisors (241862657).

12818717959 is an equidigital number, since it uses as much as digits as its factorization.

12818717959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241862656.

The product of its digits is 2540160, while the sum is 58.

The spelling of 12818717959 in words is "twelve billion, eight hundred eighteen million, seven hundred seventeen thousand, nine hundred fifty-nine".