665023344216322 has 32 divisors (see below), whose sum is σ = 1267339772611584. Its totient is φ = 254599507886400.

The previous prime is 665023344216317. The next prime is 665023344216337. The reversal of 665023344216322 is 223612443320566.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58935065629 + ... + 58935076912.

It is an arithmetic number, because the mean of its divisors is an integer number (39604367894112).

Almost surely, 2^{665023344216322} is an apocalyptic number.

665023344216322 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

665023344216322 is a deficient number, since it is larger than the sum of its proper divisors (602316428395262).

665023344216322 is a wasteful number, since it uses less digits than its factorization.

665023344216322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117870142594.

The product of its (nonzero) digits is 7464960, while the sum is 49.

Adding to 665023344216322 its reverse (223612443320566), we get a palindrome (888635787536888).

The spelling of 665023344216322 in words is "six hundred sixty-five trillion, twenty-three billion, three hundred forty-four million, two hundred sixteen thousand, three hundred twenty-two".