129461166120 has 256 divisors, whose sum is σ = 458930707200. Its totient is φ = 28802211840.

The previous prime is 129461166071. The next prime is 129461166173. The reversal of 129461166120 is 21661164921.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2946876 + ... + 2990484.

It is an arithmetic number, because the mean of its divisors is an integer number (1792698075).

Almost surely, 2^129461166120 is an apocalyptic number.

129461166120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 129461166120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (229465353600).

129461166120 is an abundant number, since it is smaller than the sum of its proper divisors (329469541080).

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

129461166120 is a wasteful number, since it uses less digits than its factorization.

129461166120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43820 (or 43816 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 39.

The spelling of 129461166120 in words is "one hundred twenty-nine billion, four hundred sixty-one million, one hundred sixty-six thousand, one hundred twenty".