129327448905 has 32 divisors (see below), whose sum is σ = 232685550720. Its totient is φ = 68143613760.

The previous prime is 129327448883. The next prime is 129327448907. The reversal of 129327448905 is 509844723921.

129327448905 is a `hidden beast` number, since 1 + 2 + 93 + 2 + 74 + 489 + 0 + 5 = 666.

It is not a de Polignac number, because 129327448905 - 2⁶ = 129327448841 is a prime.

It is not an unprimeable number, because it can be changed into a prime (129327448907) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5759766 + ... + 5782175.

It is an arithmetic number, because the mean of its divisors is an integer number (7271423460).

Almost surely, 2^129327448905 is an apocalyptic number.

129327448905 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

129327448905 is a deficient number, since it is larger than the sum of its proper divisors (103358101815).

129327448905 is a wasteful number, since it uses less digits than its factorization.

129327448905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11542038 (or 11542032 counting only the distinct ones).

The product of its (nonzero) digits is 4354560, while the sum is 54.

The spelling of 129327448905 in words is "one hundred twenty-nine billion, three hundred twenty-seven million, four hundred forty-eight thousand, nine hundred five".