320164542220213 has 4 divisors (see below), whose sum is σ = 320454809258688. Its totient is φ = 319874275181740.

The previous prime is 320164542220093. The next prime is 320164542220261. The reversal of 320164542220213 is 312022245461023.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 320164542220213 - 2⁹ = 320164542219701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320164542223213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 145133517583 + ... + 145133519788.

It is an arithmetic number, because the mean of its divisors is an integer number (80113702314672).

Almost surely, 2^{320164542220213} is an apocalyptic number.

It is an amenable number.

320164542220213 is a deficient number, since it is larger than the sum of its proper divisors (290267038475).

320164542220213 is a wasteful number, since it uses less digits than its factorization.

320164542220213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290267038474.

The product of its (nonzero) digits is 138240, while the sum is 37.

Adding to 320164542220213 its reverse (312022245461023), we get a palindrome (632186787681236).

The spelling of 320164542220213 in words is "three hundred twenty trillion, one hundred sixty-four billion, five hundred forty-two million, two hundred twenty thousand, two hundred thirteen".