129063680197 has 4 divisors (see below), whose sum is σ = 129855482080. Its totient is φ = 128271878316.

The previous prime is 129063680191. The next prime is 129063680219. The reversal of 129063680197 is 791086360921.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 129063680197 - 2¹⁹ = 129063155909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129063680191) 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 in 3 ways as a sum of consecutive naturals, for example, 395900697 + ... + 395901022.

It is an arithmetic number, because the mean of its divisors is an integer number (32463870520).

Almost surely, 2^129063680197 is an apocalyptic number.

It is an amenable number.

129063680197 is a deficient number, since it is larger than the sum of its proper divisors (791801883).

129063680197 is an equidigital number, since it uses as much as digits as its factorization.

129063680197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 791801882.

The product of its (nonzero) digits is 979776, while the sum is 52.

The spelling of 129063680197 in words is "one hundred twenty-nine billion, sixty-three million, six hundred eighty thousand, one hundred ninety-seven".