320003523552 has 96 divisors (see below), whose sum is σ = 848905142400. Its totient is φ = 105540668928.

The previous prime is 320003523533. The next prime is 320003523599. The reversal of 320003523552 is 255325300023.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8496699 + ... + 8534277.

It is an arithmetic number, because the mean of its divisors is an integer number (8842761900).

Almost surely, 2^320003523552 is an apocalyptic number.

320003523552 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 320003523552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (424452571200).

320003523552 is an abundant number, since it is smaller than the sum of its proper divisors (528901618848).

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

320003523552 is a wasteful number, since it uses less digits than its factorization.

320003523552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38528 (or 38520 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 30.

Adding to 320003523552 its reverse (255325300023), we get a palindrome (575328823575).

The spelling of 320003523552 in words is "three hundred twenty billion, three million, five hundred twenty-three thousand, five hundred fifty-two".