129073387488 has 48 divisors (see below), whose sum is σ = 339111790416. Its totient is φ = 42987110400.

The previous prime is 129073387381. The next prime is 129073387549. The reversal of 129073387488 is 884783370921.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 472363 + ... + 693738.

It is an arithmetic number, because the mean of its divisors is an integer number (7064828967).

Almost surely, 2^129073387488 is an apocalyptic number.

It is an amenable number.

129073387488 is an abundant number, since it is smaller than the sum of its proper divisors (210038402928).

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

129073387488 is a wasteful number, since it uses less digits than its factorization.

129073387488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1167267 (or 1167259 counting only the distinct ones).

The product of its (nonzero) digits is 16257024, while the sum is 60.

The spelling of 129073387488 in words is "one hundred twenty-nine billion, seventy-three million, three hundred eighty-seven thousand, four hundred eighty-eight".