320412543420 has 96 divisors (see below), whose sum is σ = 917508049920. Its totient is φ = 83526393600.

The previous prime is 320412543413. The next prime is 320412543431. The reversal of 320412543420 is 24345214023.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 144099 + ... + 813381.

It is an arithmetic number, because the mean of its divisors is an integer number (9557375520).

Almost surely, 2^320412543420 is an apocalyptic number.

320412543420 is a gapful number since it is divisible by the number (30) 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 320412543420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (458754024960).

320412543420 is an abundant number, since it is smaller than the sum of its proper divisors (597095506500).

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

320412543420 is a wasteful number, since it uses less digits than its factorization.

320412543420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 669475 (or 669473 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 30.

Adding to 320412543420 its reverse (24345214023), we get a palindrome (344757757443).

The spelling of 320412543420 in words is "three hundred twenty billion, four hundred twelve million, five hundred forty-three thousand, four hundred twenty".