320543323100000 has 576 divisors, whose sum is σ = 1059070449153024. Its totient is φ = 92224224000000.

The previous prime is 320543323099927. The next prime is 320543323100053. The reversal of 320543323100000 is 1323345023.

It is a happy number.

It is a super-2 number, since 2×320543323100000² (a number of 30 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 98498885 + ... + 101701115.

It is an arithmetic number, because the mean of its divisors is an integer number (1838663974224).

Almost surely, 2^{320543323100000} 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 320543323100000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (529535224576512).

320543323100000 is an abundant number, since it is smaller than the sum of its proper divisors (738527126053024).

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

320543323100000 is a wasteful number, since it uses less digits than its factorization.

320543323100000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3202297 (or 3202269 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 26.

Adding to 320543323100000 its reverse (1323345023), we get a palindrome (320544646445023).

The spelling of 320543323100000 in words is "three hundred twenty trillion, five hundred forty-three billion, three hundred twenty-three million, one hundred thousand".