320538372444 has 96 divisors (see below), whose sum is σ = 863285230080. Its totient is φ = 102771849600.

The previous prime is 320538372439. The next prime is 320538372463. The reversal of 320538372444 is 444273835023.

320538372444 is a `hidden beast` number, since 3 + 2 + 0 + 538 + 3 + 72 + 4 + 44 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 320538372444.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 195394 + ... + 824169.

It is an arithmetic number, because the mean of its divisors is an integer number (8992554480).

Almost surely, 2^320538372444 is an apocalyptic number.

It is an amenable number.

320538372444 is an abundant number, since it is smaller than the sum of its proper divisors (542746857636).

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

320538372444 is a wasteful number, since it uses less digits than its factorization.

320538372444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1019688 (or 1019680 counting only the distinct ones).

The product of its (nonzero) digits is 1935360, while the sum is 45.

The spelling of 320538372444 in words is "three hundred twenty billion, five hundred thirty-eight million, three hundred seventy-two thousand, four hundred forty-four".