129989341504 has 112 divisors (see below), whose sum is σ = 288547551936. Its totient is φ = 57587609600.

The previous prime is 129989341459. The next prime is 129989341507. The reversal of 129989341504 is 405143989921.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129989341507) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43958394 + ... + 43961350.

It is an arithmetic number, because the mean of its divisors is an integer number (2576317428).

Almost surely, 2^129989341504 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 129989341504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (144273775968).

129989341504 is an abundant number, since it is smaller than the sum of its proper divisors (158558210432).

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

129989341504 is a wasteful number, since it uses less digits than its factorization.

129989341504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4544 (or 4534 counting only the distinct ones).

The product of its (nonzero) digits is 2799360, while the sum is 55.

The spelling of 129989341504 in words is "one hundred twenty-nine billion, nine hundred eighty-nine million, three hundred forty-one thousand, five hundred four".