320220002145 has 32 divisors (see below), whose sum is σ = 529557460992. Its totient is φ = 165136409792.

The previous prime is 320220002143. The next prime is 320220002153. The reversal of 320220002145 is 541200022023.

It is a cyclic number.

It is not a de Polignac number, because 320220002145 - 2¹ = 320220002143 is a prime.

It is not an unprimeable number, because it can be changed into a prime (320220002143) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2677707 + ... + 2794736.

It is an arithmetic number, because the mean of its divisors is an integer number (16548670656).

Almost surely, 2^320220002145 is an apocalyptic number.

It is an amenable number.

320220002145 is a deficient number, since it is larger than the sum of its proper divisors (209337458847).

320220002145 is a wasteful number, since it uses less digits than its factorization.

320220002145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5472581.

The product of its (nonzero) digits is 960, while the sum is 21.

Adding to 320220002145 its reverse (541200022023), we get a palindrome (861420024168).

The spelling of 320220002145 in words is "three hundred twenty billion, two hundred twenty million, two thousand, one hundred forty-five".