320544335144 has 64 divisors (see below), whose sum is σ = 678395736000. Its totient is φ = 140651230720.

The previous prime is 320544335131. The next prime is 320544335149. The reversal of 320544335144 is 441533445023.

It is a junction number, because it is equal to n+sod(n) for n = 320544335098 and 320544335107.

It is not an unprimeable number, because it can be changed into a prime (320544335149) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20431127 + ... + 20446809.

It is an arithmetic number, because the mean of its divisors is an integer number (10599933375).

Almost surely, 2^320544335144 is an apocalyptic number.

It is an amenable number.

320544335144 is an abundant number, since it is smaller than the sum of its proper divisors (357851400856).

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

320544335144 is a wasteful number, since it uses less digits than its factorization.

320544335144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23738 (or 23734 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 38.

The spelling of 320544335144 in words is "three hundred twenty billion, five hundred forty-four million, three hundred thirty-five thousand, one hundred forty-four".