320255310364445 has 4 divisors (see below), whose sum is σ = 384306372437340. Its totient is φ = 256204248291552.

The previous prime is 320255310364433. The next prime is 320255310364463. The reversal of 320255310364445 is 544463013552023.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 94184268800164 + 226071041564281 = 9704858^2 + 15035659^2 .

It is a cyclic number.

It is not a de Polignac number, because 320255310364445 - 2²⁰ = 320255309315869 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 320255310364445.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32025531036440 + ... + 32025531036449.

It is an arithmetic number, because the mean of its divisors is an integer number (96076593109335).

Almost surely, 2^{320255310364445} is an apocalyptic number.

It is an amenable number.

320255310364445 is a deficient number, since it is larger than the sum of its proper divisors (64051062072895).

320255310364445 is an equidigital number, since it uses as much as digits as its factorization.

320255310364445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64051062072894.

The product of its (nonzero) digits is 5184000, while the sum is 47.

The spelling of 320255310364445 in words is "three hundred twenty trillion, two hundred fifty-five billion, three hundred ten million, three hundred sixty-four thousand, four hundred forty-five".