320200220320 has 48 divisors (see below), whose sum is σ = 757472610888. Its totient is φ = 127910845440.

The previous prime is 320200220299. The next prime is 320200220341. The reversal of 320200220320 is 23022002023.

It is an interprime number because it is at equal distance from previous prime (320200220299) and next prime (320200220341).

It can be written as a sum of positive squares in 4 ways, for example, as 316757347344 + 3442872976 = 562812^2 + 58676^2 .

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 320200220294 and 320200220303.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1200711 + ... + 1442950.

Almost surely, 2^320200220320 is an apocalyptic number.

It is an amenable number.

320200220320 is an abundant number, since it is smaller than the sum of its proper divisors (437272390568).

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

320200220320 is a wasteful number, since it uses less digits than its factorization.

320200220320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2644433 (or 2644425 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 16.

Adding to 320200220320 its reverse (23022002023), we get a palindrome (343222222343).

The spelling of 320200220320 in words is "three hundred twenty billion, two hundred million, two hundred twenty thousand, three hundred twenty".