320390704512 has 192 divisors, whose sum is σ = 954373914000. Its totient is φ = 103046737920.

The previous prime is 320390704511. The next prime is 320390704567. The reversal of 320390704512 is 215407093023.

It is a tau number, because it is divible by the number of its divisors (192).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320390704511) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 87560539 + ... + 87564197.

Almost surely, 2^320390704512 is an apocalyptic number.

320390704512 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 320390704512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (477186957000).

320390704512 is an abundant number, since it is smaller than the sum of its proper divisors (633983209488).

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

320390704512 is a wasteful number, since it uses less digits than its factorization.

320390704512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6329 (or 6314 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 36.

Adding to 320390704512 its reverse (215407093023), we get a palindrome (535797797535).

The spelling of 320390704512 in words is "three hundred twenty billion, three hundred ninety million, seven hundred four thousand, five hundred twelve".