129244611929 has 2 divisors, whose sum is σ = 129244611930. Its totient is φ = 129244611928.

The previous prime is 129244611889. The next prime is 129244611931. The reversal of 129244611929 is 929116442921.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 70411683904 + 58832928025 = 265352^2 + 242555^2 .

It is a cyclic number.

It is not a de Polignac number, because 129244611929 - 2⁸ = 129244611673 is a prime.

It is a super-3 number, since 3×129244611929³ (a number of 34 digits) contains 333 as substring.

It is a Sophie Germain prime.

Together with 129244611931, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (129244611959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64622305964 + 64622305965.

It is an arithmetic number, because the mean of its divisors is an integer number (64622305965).

Almost surely, 2^129244611929 is an apocalyptic number.

It is an amenable number.

129244611929 is a deficient number, since it is larger than the sum of its proper divisors (1).

129244611929 is an equidigital number, since it uses as much as digits as its factorization.

129244611929 is an evil number, because the sum of its binary digits is even.

The product of its digits is 559872, while the sum is 50.

The spelling of 129244611929 in words is "one hundred twenty-nine billion, two hundred forty-four million, six hundred eleven thousand, nine hundred twenty-nine".