129894389352 has 768 divisors, whose sum is σ = 476692070400. Its totient is φ = 30994513920.

The previous prime is 129894389351. The next prime is 129894389353. The reversal of 129894389352 is 253983498921.

129894389352 is a `hidden beast` number, since 129 + 89 + 4 + 3 + 89 + 352 = 666.

It is an interprime number because it is at equal distance from previous prime (129894389351) and next prime (129894389353).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a self number, because there is not a number n which added to its sum of digits gives 129894389352.

It is not an unprimeable number, because it can be changed into a prime (129894389351) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 374335243 + ... + 374335589.

It is an arithmetic number, because the mean of its divisors is an integer number (620692800).

Almost surely, 2^129894389352 is an apocalyptic number.

129894389352 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 129894389352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (238346035200).

129894389352 is an abundant number, since it is smaller than the sum of its proper divisors (346797681048).

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

129894389352 is a wasteful number, since it uses less digits than its factorization.

129894389352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 526 (or 519 counting only the distinct ones).

The product of its digits is 33592320, while the sum is 63.

The spelling of 129894389352 in words is "one hundred twenty-nine billion, eight hundred ninety-four million, three hundred eighty-nine thousand, three hundred fifty-two".