320133220145 has 8 divisors (see below), whose sum is σ = 384181820520. Its totient is φ = 256091938560.

The previous prime is 320133220117. The next prime is 320133220163. The reversal of 320133220145 is 541022331023.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 33984185104 + 286149035041 = 184348^2 + 534929^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 320133220145 - 2⁶ = 320133220081 is a prime.

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, 1733000 + ... + 1908809.

It is an arithmetic number, because the mean of its divisors is an integer number (48022727565).

Almost surely, 2^320133220145 is an apocalyptic number.

It is an amenable number.

320133220145 is a deficient number, since it is larger than the sum of its proper divisors (64048600375).

320133220145 is a wasteful number, since it uses less digits than its factorization.

320133220145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3659395.

The product of its (nonzero) digits is 4320, while the sum is 26.

Adding to 320133220145 its reverse (541022331023), we get a palindrome (861155551168).

The spelling of 320133220145 in words is "three hundred twenty billion, one hundred thirty-three million, two hundred twenty thousand, one hundred forty-five".