320104510555 has 4 divisors (see below), whose sum is σ = 384125412672. Its totient is φ = 256083608440.

The previous prime is 320104510553. The next prime is 320104510573. The reversal of 320104510555 is 555015401023.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 555015401023 = 947 ⋅586077509.

It is not a de Polignac number, because 320104510555 - 2¹ = 320104510553 is a prime.

It is a super-2 number, since 2×320104510555² (a number of 24 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320104510553) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32010451051 + ... + 32010451060.

It is an arithmetic number, because the mean of its divisors is an integer number (96031353168).

Almost surely, 2^320104510555 is an apocalyptic number.

320104510555 is a deficient number, since it is larger than the sum of its proper divisors (64020902117).

320104510555 is an equidigital number, since it uses as much as digits as its factorization.

320104510555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64020902116.

The product of its (nonzero) digits is 15000, while the sum is 31.

Adding to 320104510555 its reverse (555015401023), we get a palindrome (875119911578).

The spelling of 320104510555 in words is "three hundred twenty billion, one hundred four million, five hundred ten thousand, five hundred fifty-five".