129966282666 has 144 divisors (see below), whose sum is σ = 332211166560. Its totient is φ = 36371522880.

The previous prime is 129966282629. The next prime is 129966282703. The reversal of 129966282666 is 666282669921.

It is an interprime number because it is at equal distance from previous prime (129966282629) and next prime (129966282703).

It is a super-2 number, since 2×129966282666² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

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 71 ways as a sum of consecutive naturals, for example, 3016125 + ... + 3058911.

It is an arithmetic number, because the mean of its divisors is an integer number (2307021990).

Almost surely, 2^129966282666 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 129966282666, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (166105583280).

129966282666 is an abundant number, since it is smaller than the sum of its proper divisors (202244883894).

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

129966282666 is a wasteful number, since it uses less digits than its factorization.

129966282666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42881 (or 42855 counting only the distinct ones).

The product of its digits is 40310784, while the sum is 63.

The spelling of 129966282666 in words is "one hundred twenty-nine billion, nine hundred sixty-six million, two hundred eighty-two thousand, six hundred sixty-six".