320343726624305 has 8 divisors (see below), whose sum is σ = 385443068390952. Its totient is φ = 255587917004928.

The previous prime is 320343726624289. The next prime is 320343726624319. The reversal of 320343726624305 is 503426627343023.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 87658203859216 + 232685522765089 = 9362596^2 + 15254033^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 320343726624305 - 2⁴ = 320343726624289 is a prime.

It is a super-2 number, since 2×320343726624305² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85883034764 + ... + 85883038493.

It is an arithmetic number, because the mean of its divisors is an integer number (48180383548869).

Almost surely, 2^{320343726624305} is an apocalyptic number.

It is an amenable number.

320343726624305 is a deficient number, since it is larger than the sum of its proper divisors (65099341766647).

320343726624305 is a wasteful number, since it uses less digits than its factorization.

320343726624305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171766073635.

The product of its (nonzero) digits is 13063680, while the sum is 50.

The spelling of 320343726624305 in words is "three hundred twenty trillion, three hundred forty-three billion, seven hundred twenty-six million, six hundred twenty-four thousand, three hundred five".