129500673528 has 64 divisors (see below), whose sum is σ = 328236480000. Its totient is φ = 42570208512.

The previous prime is 129500673527. The next prime is 129500673637. The reversal of 129500673528 is 825376005921.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129500673527) 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 15 ways as a sum of consecutive naturals, for example, 1585023 + ... + 1664721.

It is an arithmetic number, because the mean of its divisors is an integer number (5128695000).

Almost surely, 2^129500673528 is an apocalyptic number.

It is an amenable number.

129500673528 is an abundant number, since it is smaller than the sum of its proper divisors (198735806472).

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

129500673528 is a wasteful number, since it uses less digits than its factorization.

129500673528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80644 (or 80640 counting only the distinct ones).

The product of its (nonzero) digits is 907200, while the sum is 48.

The spelling of 129500673528 in words is "one hundred twenty-nine billion, five hundred million, six hundred seventy-three thousand, five hundred twenty-eight".