129899992992 has 384 divisors, whose sum is σ = 443767984128. Its totient is φ = 32292249600.

The previous prime is 129899992979. The next prime is 129899993021. The reversal of 129899992992 is 299299998921.

It is a happy number.

129899992992 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×129899992992² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 16058773 + ... + 16066859.

It is an arithmetic number, because the mean of its divisors is an integer number (1155645792).

Almost surely, 2^129899992992 is an apocalyptic number.

129899992992 is a gapful number since it is divisible by the number (12) 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 129899992992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (221883992064).

129899992992 is an abundant number, since it is smaller than the sum of its proper divisors (313867991136).

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

129899992992 is a wasteful number, since it uses less digits than its factorization.

129899992992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8212 (or 8204 counting only the distinct ones).

The product of its digits is 306110016, while the sum is 78.

The spelling of 129899992992 in words is "one hundred twenty-nine billion, eight hundred ninety-nine million, nine hundred ninety-two thousand, nine hundred ninety-two".