129240480084520 has 32 divisors (see below), whose sum is σ = 332332663075200. Its totient is φ = 44311021743168.

The previous prime is 129240480084511. The next prime is 129240480084619. The reversal of 129240480084520 is 25480084042921.

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, 230786571300 + ... + 230786571859.

It is an arithmetic number, because the mean of its divisors is an integer number (10385395721100).

Almost surely, 2^{129240480084520} is an apocalyptic number.

129240480084520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

129240480084520 is an abundant number, since it is smaller than the sum of its proper divisors (203092182990680).

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

129240480084520 is a wasteful number, since it uses less digits than its factorization.

129240480084520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 461573143177 (or 461573143173 counting only the distinct ones).

The product of its (nonzero) digits is 1474560, while the sum is 49.

The spelling of 129240480084520 in words is "one hundred twenty-nine trillion, two hundred forty billion, four hundred eighty million, eighty-four thousand, five hundred twenty".