12768783229 has 4 divisors (see below), whose sum is σ = 12783683484. Its totient is φ = 12753882976.

The previous prime is 12768783197. The next prime is 12768783263. The reversal of 12768783229 is 92238786721.

It is a happy number.

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 11861388100 + 907395129 = 108910^2 + 30123^2 .

It is a cyclic number.

It is not a de Polignac number, because 12768783229 - 2⁵ = 12768783197 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12768783229.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12768783529) 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, 7448842 + ... + 7450555.

It is an arithmetic number, because the mean of its divisors is an integer number (3195920871).

Almost surely, 2^12768783229 is an apocalyptic number.

It is an amenable number.

12768783229 is a deficient number, since it is larger than the sum of its proper divisors (14900255).

12768783229 is an equidigital number, since it uses as much as digits as its factorization.

12768783229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14900254.

The product of its digits is 4064256, while the sum is 55.

The spelling of 12768783229 in words is "twelve billion, seven hundred sixty-eight million, seven hundred eighty-three thousand, two hundred twenty-nine".