320187541728 has 48 divisors (see below), whose sum is σ = 863208314640. Its totient is φ = 103844606976.

The previous prime is 320187541727. The next prime is 320187541763. The reversal of 320187541728 is 827145781023.

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

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320187541721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45067893 + ... + 45074996.

It is an arithmetic number, because the mean of its divisors is an integer number (17983506555).

Almost surely, 2^320187541728 is an apocalyptic number.

It is an amenable number.

320187541728 is an abundant number, since it is smaller than the sum of its proper divisors (543020772912).

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

320187541728 is a wasteful number, since it uses less digits than its factorization.

320187541728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90142939 (or 90142931 counting only the distinct ones).

The product of its (nonzero) digits is 752640, while the sum is 48.

The spelling of 320187541728 in words is "three hundred twenty billion, one hundred eighty-seven million, five hundred forty-one thousand, seven hundred twenty-eight".