320665543043601 has 8 divisors (see below), whose sum is σ = 488633208447424. Its totient is φ = 183237453167760.

The previous prime is 320665543043533. The next prime is 320665543043617. The reversal of 320665543043601 is 106340345566023.

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

It is not a de Polignac number, because 320665543043601 - 2¹⁷ = 320665542912529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320665543043701) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7634893881970 + ... + 7634893882011.

It is an arithmetic number, because the mean of its divisors is an integer number (61079151055928).

Almost surely, 2^{320665543043601} is an apocalyptic number.

It is an amenable number.

320665543043601 is a deficient number, since it is larger than the sum of its proper divisors (167967665403823).

320665543043601 is a wasteful number, since it uses less digits than its factorization.

320665543043601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15269787763991.

The product of its (nonzero) digits is 4665600, while the sum is 48.

The spelling of 320665543043601 in words is "three hundred twenty trillion, six hundred sixty-five billion, five hundred forty-three million, forty-three thousand, six hundred one".