12529328320 has 56 divisors (see below), whose sum is σ = 29851374384. Its totient is φ = 5009058816.

The previous prime is 12529328309. The next prime is 12529328353. The reversal of 12529328320 is 2382392521.

It is a self number, because there is not a number n which added to its sum of digits gives 12529328320.

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, 657162 + ... + 675958.

Almost surely, 2^12529328320 is an apocalyptic number.

12529328320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12529328320 is an abundant number, since it is smaller than the sum of its proper divisors (17322046064).

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

12529328320 is a wasteful number, since it uses less digits than its factorization.

12529328320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20897 (or 20887 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 37.

The spelling of 12529328320 in words is "twelve billion, five hundred twenty-nine million, three hundred twenty-eight thousand, three hundred twenty".