129304520066 has 16 divisors (see below), whose sum is σ = 205311110400. Its totient is φ = 60971175888.

The previous prime is 129304520053. The next prime is 129304520069. The reversal of 129304520066 is 660025403921.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (129304520069) 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, 25920626 + ... + 25925613.

It is an arithmetic number, because the mean of its divisors is an integer number (12831944400).

Almost surely, 2^129304520066 is an apocalyptic number.

129304520066 is a deficient number, since it is larger than the sum of its proper divisors (76006590334).

129304520066 is a wasteful number, since it uses less digits than its factorization.

129304520066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51846313.

The product of its (nonzero) digits is 77760, while the sum is 38.

Adding to 129304520066 its reverse (660025403921), we get a palindrome (789329923987).

The spelling of 129304520066 in words is "one hundred twenty-nine billion, three hundred four million, five hundred twenty thousand, sixty-six".