129015443648 has 168 divisors, whose sum is σ = 335466915552. Its totient is φ = 48036298752.

The previous prime is 129015443647. The next prime is 129015443651. The reversal of 129015443648 is 846344510921.

It is not an unprimeable number, because it can be changed into a prime (129015443647) 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 23 ways as a sum of consecutive naturals, for example, 1236986 + ... + 1337222.

Almost surely, 2^129015443648 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 129015443648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (167733457776).

129015443648 is an abundant number, since it is smaller than the sum of its proper divisors (206451471904).

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

129015443648 is a wasteful number, since it uses less digits than its factorization.

129015443648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100299 (or 100276 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 47.

The spelling of 129015443648 in words is "one hundred twenty-nine billion, fifteen million, four hundred forty-three thousand, six hundred forty-eight".