320655040205 has 16 divisors (see below), whose sum is σ = 385656695424. Its totient is φ = 255943840320.

The previous prime is 320655040133. The next prime is 320655040219. The reversal of 320655040205 is 502040556023.

It is not a de Polignac number, because 320655040205 - 2²⁰ = 320653991629 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13335824 + ... + 13359846.

It is an arithmetic number, because the mean of its divisors is an integer number (24103543464).

Almost surely, 2^320655040205 is an apocalyptic number.

It is an amenable number.

320655040205 is a deficient number, since it is larger than the sum of its proper divisors (65001655219).

320655040205 is a wasteful number, since it uses less digits than its factorization.

320655040205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29956.

The product of its (nonzero) digits is 36000, while the sum is 32.

Adding to 320655040205 its reverse (502040556023), we get a palindrome (822695596228).

The spelling of 320655040205 in words is "three hundred twenty billion, six hundred fifty-five million, forty thousand, two hundred five".