320221130320400 has 60 divisors (see below), whose sum is σ = 771614148013332. Its totient is φ = 127708367646720.

The previous prime is 320221130320243. The next prime is 320221130320417. The reversal of 320221130320400 is 4023031122023.

It can be written as a sum of positive squares in 6 ways, for example, as 352626942976 + 319868503377424 = 593824^2 + 17884868^2 .

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, 1187629037 + ... + 1187898636.

Almost surely, 2^{320221130320400} is an apocalyptic number.

It is an amenable number.

320221130320400 is an abundant number, since it is smaller than the sum of its proper divisors (451393017692932).

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

320221130320400 is a wasteful number, since it uses less digits than its factorization.

320221130320400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2375528028 (or 2375528017 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 320221130320400 its reverse (4023031122023), we get a palindrome (324244161442423).

The spelling of 320221130320400 in words is "three hundred twenty trillion, two hundred twenty-one billion, one hundred thirty million, three hundred twenty thousand, four hundred".