320240216266 has 4 divisors (see below), whose sum is σ = 480360324402. Its totient is φ = 160120108132.

The previous prime is 320240216213. The next prime is 320240216269. The reversal of 320240216266 is 662612042023.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 662612042023 = 467 ⋅1418869469.

It can be written as a sum of positive squares in only one way, i.e., 254283190225 + 65957026041 = 504265^2 + 256821^2 .

It is a super-2 number, since 2×320240216266² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (320240216269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80060054065 + ... + 80060054068.

Almost surely, 2^320240216266 is an apocalyptic number.

320240216266 is a deficient number, since it is larger than the sum of its proper divisors (160120108136).

320240216266 is a wasteful number, since it uses less digits than its factorization.

320240216266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160120108135.

The product of its (nonzero) digits is 41472, while the sum is 34.

Adding to 320240216266 its reverse (662612042023), we get a palindrome (982852258289).

The spelling of 320240216266 in words is "three hundred twenty billion, two hundred forty million, two hundred sixteen thousand, two hundred sixty-six".