320412440000 has 140 divisors (see below), whose sum is σ = 795090133464. Its totient is φ = 128072832000.

The previous prime is 320412439993. The next prime is 320412440077. The reversal of 320412440000 is 44214023.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 93878294 + ... + 93881706.

Almost surely, 2^320412440000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 320412440000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (397545066732).

320412440000 is an abundant number, since it is smaller than the sum of its proper divisors (474677693464).

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

320412440000 is an equidigital number, since it uses as much as digits as its factorization.

320412440000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5792 (or 5767 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 320412440000 its reverse (44214023), we get a palindrome (320456654023).

The spelling of 320412440000 in words is "three hundred twenty billion, four hundred twelve million, four hundred forty thousand".