129681259200 has 420 divisors, whose sum is σ = 482074468920. Its totient is φ = 34190069760.

The previous prime is 129681259193. The next prime is 129681259241. The reversal of 129681259200 is 2952186921.

It is a happy number.

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

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 59 ways as a sum of consecutive naturals, for example, 11528779 + ... + 11540021.

Almost surely, 2^129681259200 is an apocalyptic number.

129681259200 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 129681259200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (241037234460).

129681259200 is an abundant number, since it is smaller than the sum of its proper divisors (352393209720).

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

129681259200 is a wasteful number, since it uses less digits than its factorization.

129681259200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11366 (or 11342 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 45.

The spelling of 129681259200 in words is "one hundred twenty-nine billion, six hundred eighty-one million, two hundred fifty-nine thousand, two hundred".