129139113128867 has 2 divisors, whose sum is σ = 129139113128868. Its totient is φ = 129139113128866.

The previous prime is 129139113128747. The next prime is 129139113128887. The reversal of 129139113128867 is 768821311931921.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 129139113128867 - 2¹² = 129139113124771 is a prime.

It is not a weakly prime, because it can be changed into another prime (129139113128887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64569556564433 + 64569556564434.

It is an arithmetic number, because the mean of its divisors is an integer number (64569556564434).

Almost surely, 2^{129139113128867} is an apocalyptic number.

129139113128867 is a deficient number, since it is larger than the sum of its proper divisors (1).

129139113128867 is an equidigital number, since it uses as much as digits as its factorization.

129139113128867 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7838208, while the sum is 62.

The spelling of 129139113128867 in words is "one hundred twenty-nine trillion, one hundred thirty-nine billion, one hundred thirteen million, one hundred twenty-eight thousand, eight hundred sixty-seven".