320200320320 has 56 divisors (see below), whose sum is σ = 807328615464. Its totient is φ = 120546000896.

The previous prime is 320200320299. The next prime is 320200320329. The reversal of 320200320320 is 23023002023.

It can be written as a sum of positive squares in 4 ways, for example, as 159322319104 + 160878001216 = 399152^2 + 401096^2 .

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320200320329) 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, 29424737 + ... + 29435616.

It is an arithmetic number, because the mean of its divisors is an integer number (14416582419).

Almost surely, 2^320200320320 is an apocalyptic number.

It is an amenable number.

320200320320 is an abundant number, since it is smaller than the sum of its proper divisors (487128295144).

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

320200320320 is a wasteful number, since it uses less digits than its factorization.

320200320320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58860387 (or 58860377 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 17.

Adding to 320200320320 its reverse (23023002023), we get a palindrome (343223322343).

The spelling of 320200320320 in words is "three hundred twenty billion, two hundred million, three hundred twenty thousand, three hundred twenty".