129684806352 has 200 divisors, whose sum is σ = 385089183072. Its totient is φ = 42119481600.

The previous prime is 129684806351. The next prime is 129684806371. The reversal of 129684806352 is 253608486921.

129684806352 is a `hidden beast` number, since 12 + 96 + 8 + 480 + 63 + 5 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129684806351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 8451327 + ... + 8466657.

Almost surely, 2^129684806352 is an apocalyptic number.

129684806352 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 129684806352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (192544591536).

129684806352 is an abundant number, since it is smaller than the sum of its proper divisors (255404376720).

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

129684806352 is a wasteful number, since it uses less digits than its factorization.

129684806352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15519 (or 15504 counting only the distinct ones).

The product of its (nonzero) digits is 4976640, while the sum is 54.

The spelling of 129684806352 in words is "one hundred twenty-nine billion, six hundred eighty-four million, eight hundred six thousand, three hundred fifty-two".