320020200100000 has 72 divisors (see below), whose sum is σ = 787499308248156. Its totient is φ = 128008080000000.

The previous prime is 320020200099961. The next prime is 320020200100057. The reversal of 320020200100000 is 1002020023.

It can be written as a sum of positive squares in 6 ways, for example, as 144881761715856 + 175138438384144 = 12036684^2 + 13233988^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a self number, because there is not a number n which added to its sum of digits gives 320020200100000.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1600001001 + ... + 1600201000.

Almost surely, 2^{320020200100000} is an apocalyptic number.

It is an amenable number.

320020200100000 is an abundant number, since it is smaller than the sum of its proper divisors (467479108148156).

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

320020200100000 is an frugal number, since it uses more digits than its factorization.

320020200100000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3200202036 (or 3200202008 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 10.

Adding to 320020200100000 its reverse (1002020023), we get a palindrome (320021202120023).

The spelling of 320020200100000 in words is "three hundred twenty trillion, twenty billion, two hundred million, one hundred thousand".