320565210001 has 4 divisors (see below), whose sum is σ = 327385746432. Its totient is φ = 313744673572.

The previous prime is 320565209999. The next prime is 320565210029. The reversal of 320565210001 is 100012565023.

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 320565210001 - 2¹ = 320565209999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320565210601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3410268145 + ... + 3410268238.

It is an arithmetic number, because the mean of its divisors is an integer number (81846436608).

Almost surely, 2^320565210001 is an apocalyptic number.

It is an amenable number.

320565210001 is a deficient number, since it is larger than the sum of its proper divisors (6820536431).

320565210001 is an equidigital number, since it uses as much as digits as its factorization.

320565210001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6820536430.

The product of its (nonzero) digits is 1800, while the sum is 25.

Adding to 320565210001 its reverse (100012565023), we get a palindrome (420577775024).

The spelling of 320565210001 in words is "three hundred twenty billion, five hundred sixty-five million, two hundred ten thousand, one".