129805606068 has 24 divisors (see below), whose sum is σ = 302885573760. Its totient is φ = 43267703040.

The previous prime is 129805606067. The next prime is 129805606081. The reversal of 129805606068 is 860606508921.

It is a self number, because there is not a number n which added to its sum of digits gives 129805606068.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129805606067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1162948 + ... + 1269668.

It is an arithmetic number, because the mean of its divisors is an integer number (12620232240).

Almost surely, 2^129805606068 is an apocalyptic number.

It is an amenable number.

129805606068 is an abundant number, since it is smaller than the sum of its proper divisors (173079967692).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

129805606068 is a wasteful number, since it uses less digits than its factorization.

129805606068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208087 (or 208085 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 51.

The spelling of 129805606068 in words is "one hundred twenty-nine billion, eight hundred five million, six hundred six thousand, sixty-eight".