129112807693 has 2 divisors, whose sum is σ = 129112807694. Its totient is φ = 129112807692.

The previous prime is 129112807669. The next prime is 129112807729. The reversal of 129112807693 is 396708211921.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 99450668164 + 29662139529 = 315358^2 + 172227^2 .

It is a cyclic number.

It is not a de Polignac number, because 129112807693 - 2²⁹ = 128575936781 is a prime.

It is a super-2 number, since 2×129112807693² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (129112807193) 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, 64556403846 + 64556403847.

It is an arithmetic number, because the mean of its divisors is an integer number (64556403847).

Almost surely, 2^129112807693 is an apocalyptic number.

It is an amenable number.

129112807693 is a deficient number, since it is larger than the sum of its proper divisors (1).

129112807693 is an equidigital number, since it uses as much as digits as its factorization.

129112807693 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 326592, while the sum is 49.

The spelling of 129112807693 in words is "one hundred twenty-nine billion, one hundred twelve million, eight hundred seven thousand, six hundred ninety-three".