129435680708 has 6 divisors (see below), whose sum is σ = 226512441246. Its totient is φ = 64717840352.

The previous prime is 129435680701. The next prime is 129435680761. The reversal of 129435680708 is 807086534921.

It can be written as a sum of positive squares in only one way, i.e., 117352834624 + 12082846084 = 342568^2 + 109922^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 129435680708.

It is not an unprimeable number, because it can be changed into a prime (129435680701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16179460085 + ... + 16179460092.

It is an arithmetic number, because the mean of its divisors is an integer number (37752073541).

It is a 1-persistent number, because it is pandigital, but 2⋅129435680708 = 258871361416 is not.

Almost surely, 2^129435680708 is an apocalyptic number.

It is an amenable number.

129435680708 is a deficient number, since it is larger than the sum of its proper divisors (97076760538).

129435680708 is a wasteful number, since it uses less digits than its factorization.

129435680708 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32358920181 (or 32358920179 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 53.

The spelling of 129435680708 in words is "one hundred twenty-nine billion, four hundred thirty-five million, six hundred eighty thousand, seven hundred eight".