129112807680 has 1080 divisors, whose sum is σ = 510239304960. Its totient is φ = 31133859840.

The previous prime is 129112807669. The next prime is 129112807693. The reversal of 129112807680 is 86708211921.

129112807680 is a `hidden beast` number, since 1 + 291 + 1 + 280 + 7 + 6 + 80 = 666.

It is a tau number, because it is divible by the number of its divisors (1080).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 928869051 + ... + 928869189.

Almost surely, 2^129112807680 is an apocalyptic number.

129112807680 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 129112807680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (255119652480).

129112807680 is an abundant number, since it is smaller than the sum of its proper divisors (381126497280).

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

129112807680 is a wasteful number, since it uses less digits than its factorization.

129112807680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237 (or 197 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 45.

The spelling of 129112807680 in words is "one hundred twenty-nine billion, one hundred twelve million, eight hundred seven thousand, six hundred eighty".