129444672163 has 2 divisors, whose sum is σ = 129444672164. Its totient is φ = 129444672162.

The previous prime is 129444671957. The next prime is 129444672241. The reversal of 129444672163 is 361276444921.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 129444672163 - 2⁹ = 129444671651 is a prime.

It is not a weakly prime, because it can be changed into another prime (129444672263) 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 as a sum of consecutive naturals, namely, 64722336081 + 64722336082.

It is an arithmetic number, because the mean of its divisors is an integer number (64722336082).

Almost surely, 2^129444672163 is an apocalyptic number.

129444672163 is a deficient number, since it is larger than the sum of its proper divisors (1).

129444672163 is an equidigital number, since it uses as much as digits as its factorization.

129444672163 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1741824, while the sum is 49.

The spelling of 129444672163 in words is "one hundred twenty-nine billion, four hundred forty-four million, six hundred seventy-two thousand, one hundred sixty-three".