129989443350 has 192 divisors, whose sum is σ = 377235855360. Its totient is φ = 29335219200.

The previous prime is 129989443349. The next prime is 129989443357. The reversal of 129989443350 is 53344989921.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129989443357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1091962 + ... + 1205138.

It is an arithmetic number, because the mean of its divisors is an integer number (1964770080).

Almost surely, 2^129989443350 is an apocalyptic number.

129989443350 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 129989443350, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (188617927680).

129989443350 is an abundant number, since it is smaller than the sum of its proper divisors (247246412010).

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

129989443350 is a wasteful number, since it uses less digits than its factorization.

129989443350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113255 (or 113250 counting only the distinct ones).

The product of its (nonzero) digits is 8398080, while the sum is 57.

The spelling of 129989443350 in words is "one hundred twenty-nine billion, nine hundred eighty-nine million, four hundred forty-three thousand, three hundred fifty".