665440052112322 has 16 divisors (see below), whose sum is σ = 1025179013711232. Its totient is φ = 323714444667120.

The previous prime is 665440052112313. The next prime is 665440052112379. The reversal of 665440052112322 is 223211250044566.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 180780204 + ... + 184424407.

It is an arithmetic number, because the mean of its divisors is an integer number (64073688356952).

Almost surely, 2^{665440052112322} is an apocalyptic number.

665440052112322 is a deficient number, since it is larger than the sum of its proper divisors (359738961598910).

665440052112322 is a wasteful number, since it uses less digits than its factorization.

665440052112322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 365229273.

The product of its (nonzero) digits is 691200, while the sum is 43.

The spelling of 665440052112322 in words is "six hundred sixty-five trillion, four hundred forty billion, fifty-two million, one hundred twelve thousand, three hundred twenty-two".