129667209606 has 96 divisors (see below), whose sum is σ = 324889688448. Its totient is φ = 36939006720.

The previous prime is 129667209593. The next prime is 129667209613. The reversal of 129667209606 is 606902766921.

129667209606 is a `hidden beast` number, since 1 + 2 + 9 + 6 + 6 + 7 + 20 + 9 + 606 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2950365 + ... + 2993991.

It is an arithmetic number, because the mean of its divisors is an integer number (3384267588).

Almost surely, 2^129667209606 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 129667209606, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (162444844224).

129667209606 is an abundant number, since it is smaller than the sum of its proper divisors (195222478842).

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

129667209606 is a wasteful number, since it uses less digits than its factorization.

129667209606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44546 (or 44543 counting only the distinct ones).

The product of its (nonzero) digits is 2939328, while the sum is 54.

The spelling of 129667209606 in words is "one hundred twenty-nine billion, six hundred sixty-seven million, two hundred nine thousand, six hundred six".