666734656322 has 32 divisors (see below), whose sum is σ = 1251938747520. Its totient is φ = 259661364480.

The previous prime is 666734656321. The next prime is 666734656397. The reversal of 666734656322 is 223656437666.

It is not an unprimeable number, because it can be changed into a prime (666734656321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48293204 + ... + 48307007.

It is an arithmetic number, because the mean of its divisors is an integer number (39123085860).

Almost surely, 2^666734656322 is an apocalyptic number.

666734656322 is a deficient number, since it is larger than the sum of its proper divisors (585204091198).

666734656322 is a wasteful number, since it uses less digits than its factorization.

666734656322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96600266.

The product of its digits is 39191040, while the sum is 56.

The spelling of 666734656322 in words is "six hundred sixty-six billion, seven hundred thirty-four million, six hundred fifty-six thousand, three hundred twenty-two".