129151987200 has 720 divisors, whose sum is σ = 486114623280. Its totient is φ = 32699842560.

The previous prime is 129151987177. The next prime is 129151987243. The reversal of 129151987200 is 2789151921.

129151987200 is a `hidden beast` number, since 129 + 1 + 519 + 8 + 7 + 2 + 0 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (720).

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 71 ways as a sum of consecutive naturals, for example, 223833312 + ... + 223833888.

It is an arithmetic number, because the mean of its divisors is an integer number (675159199).

Almost surely, 2^129151987200 is an apocalyptic number.

129151987200 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 129151987200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (243057311640).

129151987200 is an abundant number, since it is smaller than the sum of its proper divisors (356962636080).

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

129151987200 is a wasteful number, since it uses less digits than its factorization.

129151987200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 707 (or 683 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 45.

The spelling of 129151987200 in words is "one hundred twenty-nine billion, one hundred fifty-one million, nine hundred eighty-seven thousand, two hundred".