320609428512 has 48 divisors (see below), whose sum is σ = 885894478560. Its totient is φ = 101245082112.

The previous prime is 320609428511. The next prime is 320609428603. The reversal of 320609428512 is 215824906023.

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

It is not an unprimeable number, because it can be changed into a prime (320609428511) 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 7 ways as a sum of consecutive naturals, for example, 87884533 + ... + 87888180.

It is an arithmetic number, because the mean of its divisors is an integer number (18456134970).

Almost surely, 2^320609428512 is an apocalyptic number.

320609428512 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

320609428512 is an abundant number, since it is smaller than the sum of its proper divisors (565285050048).

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

320609428512 is a wasteful number, since it uses less digits than its factorization.

320609428512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175772745 (or 175772737 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 42.

The spelling of 320609428512 in words is "three hundred twenty billion, six hundred nine million, four hundred twenty-eight thousand, five hundred twelve".