320364331356655 has 4 divisors (see below), whose sum is σ = 384437197627992. Its totient is φ = 256291465085320.

The previous prime is 320364331356637. The next prime is 320364331356673. The reversal of 320364331356655 is 556653133463023.

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

It is an interprime number because it is at equal distance from previous prime (320364331356637) and next prime (320364331356673).

It is not a de Polignac number, because 320364331356655 - 2¹³ = 320364331348463 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 320364331356596 and 320364331356605.

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, 32036433135661 + ... + 32036433135670.

It is an arithmetic number, because the mean of its divisors is an integer number (96109299406998).

Almost surely, 2^{320364331356655} is an apocalyptic number.

320364331356655 is a deficient number, since it is larger than the sum of its proper divisors (64072866271337).

320364331356655 is an equidigital number, since it uses as much as digits as its factorization.

320364331356655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64072866271336.

The product of its (nonzero) digits is 52488000, while the sum is 55.

The spelling of 320364331356655 in words is "three hundred twenty trillion, three hundred sixty-four billion, three hundred thirty-one million, three hundred fifty-six thousand, six hundred fifty-five".