320745806832 has 160 divisors (see below), whose sum is σ = 913307616000. Its totient is φ = 96991276800.

The previous prime is 320745806789. The next prime is 320745806833. The reversal of 320745806832 is 238608547023.

It is a happy number.

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 (320745806833) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31875082 + ... + 31885142.

It is an arithmetic number, because the mean of its divisors is an integer number (5708172600).

Almost surely, 2^320745806832 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 320745806832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (456653808000).

320745806832 is an abundant number, since it is smaller than the sum of its proper divisors (592561809168).

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

320745806832 is a wasteful number, since it uses less digits than its factorization.

320745806832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10604 (or 10576 counting only the distinct ones).

The product of its (nonzero) digits is 1935360, while the sum is 48.

The spelling of 320745806832 in words is "three hundred twenty billion, seven hundred forty-five million, eight hundred six thousand, eight hundred thirty-two".