12764777929 has 2 divisors, whose sum is σ = 12764777930. Its totient is φ = 12764777928.

The previous prime is 12764777917. The next prime is 12764777957. The reversal of 12764777929 is 92977746721.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11432527929 + 1332250000 = 106923^2 + 36500^2 .

It is a cyclic number.

It is not a de Polignac number, because 12764777929 - 2⁵ = 12764777897 is a prime.

It is not a weakly prime, because it can be changed into another prime (12764777959) 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 as a sum of consecutive naturals, namely, 6382388964 + 6382388965.

It is an arithmetic number, because the mean of its divisors is an integer number (6382388965).

Almost surely, 2^12764777929 is an apocalyptic number.

It is an amenable number.

12764777929 is a deficient number, since it is larger than the sum of its proper divisors (1).

12764777929 is an equidigital number, since it uses as much as digits as its factorization.

12764777929 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18670176, while the sum is 61.

The spelling of 12764777929 in words is "twelve billion, seven hundred sixty-four million, seven hundred seventy-seven thousand, nine hundred twenty-nine".