129512119680 has 384 divisors, whose sum is σ = 463484736000. Its totient is φ = 33301352448.

The previous prime is 129512119679. The next prime is 129512119691. The reversal of 129512119680 is 86911215921.

129512119680 is a `hidden beast` number, since 12 + 9 + 512 + 119 + 6 + 8 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (384).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 19563411 + ... + 19570029.

It is an arithmetic number, because the mean of its divisors is an integer number (1206991500).

Almost surely, 2^129512119680 is an apocalyptic number.

129512119680 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 129512119680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (231742368000).

129512119680 is an abundant number, since it is smaller than the sum of its proper divisors (333972616320).

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

129512119680 is a wasteful number, since it uses less digits than its factorization.

129512119680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6766 (or 6751 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 45.

The spelling of 129512119680 in words is "one hundred twenty-nine billion, five hundred twelve million, one hundred nineteen thousand, six hundred eighty".