129699446029 has 2 divisors, whose sum is σ = 129699446030. Its totient is φ = 129699446028.

The previous prime is 129699446003. The next prime is 129699446081. The reversal of 129699446029 is 920644996921.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 114815934025 + 14883512004 = 338845^2 + 121998^2 .

It is a cyclic number.

It is not a de Polignac number, because 129699446029 - 2⁷ = 129699445901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (129699441029) 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, 64849723014 + 64849723015.

It is an arithmetic number, because the mean of its divisors is an integer number (64849723015).

Almost surely, 2^129699446029 is an apocalyptic number.

It is an amenable number.

129699446029 is a deficient number, since it is larger than the sum of its proper divisors (1).

129699446029 is an equidigital number, since it uses as much as digits as its factorization.

129699446029 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15116544, while the sum is 61.

The spelling of 129699446029 in words is "one hundred twenty-nine billion, six hundred ninety-nine million, four hundred forty-six thousand, twenty-nine".