320245305335544 has 32 divisors (see below), whose sum is σ = 801547467898320. Its totient is φ = 106623874503936.

The previous prime is 320245305335539. The next prime is 320245305335569. The reversal of 320245305335544 is 445533503542023.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 320245305335493 and 320245305335502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7785016999 + ... + 7785058134.

Almost surely, 2^{320245305335544} is an apocalyptic number.

It is an amenable number.

320245305335544 is an abundant number, since it is smaller than the sum of its proper divisors (481302162562776).

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

320245305335544 is a wasteful number, since it uses less digits than its factorization.

320245305335544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15570075999 (or 15570075995 counting only the distinct ones).

The product of its (nonzero) digits is 12960000, while the sum is 48.

Adding to 320245305335544 its reverse (445533503542023), we get a palindrome (765778808877567).

The spelling of 320245305335544 in words is "three hundred twenty trillion, two hundred forty-five billion, three hundred five million, three hundred thirty-five thousand, five hundred forty-four".