129878316176 has 80 divisors (see below), whose sum is σ = 301827181824. Its totient is φ = 52934103552.

The previous prime is 129878316143. The next prime is 129878316179. The reversal of 129878316176 is 671613878921.

129878316176 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (129878316179) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 299930 + ... + 591366.

Almost surely, 2^129878316176 is an apocalyptic number.

129878316176 is a gapful number since it is divisible by the number (16) 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 129878316176, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (150913590912).

129878316176 is an abundant number, since it is smaller than the sum of its proper divisors (171948865648).

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

129878316176 is a wasteful number, since it uses less digits than its factorization.

129878316176 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291648 (or 291642 counting only the distinct ones).

The product of its digits is 6096384, while the sum is 59.

The spelling of 129878316176 in words is "one hundred twenty-nine billion, eight hundred seventy-eight million, three hundred sixteen thousand, one hundred seventy-six".