320055551105 has 4 divisors (see below), whose sum is σ = 384066661332. Its totient is φ = 256044440880.

The previous prime is 320055551071. The next prime is 320055551107. The reversal of 320055551105 is 501155550023.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 501155550023 = 18517 ⋅27064619.

It can be written as a sum of positive squares in 2 ways, for example, as 236150318209 + 83905232896 = 485953^2 + 289664^2 .

It is not a de Polignac number, because 320055551105 - 2¹⁶ = 320055485569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320055551107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32005555106 + ... + 32005555115.

It is an arithmetic number, because the mean of its divisors is an integer number (96016665333).

Almost surely, 2^320055551105 is an apocalyptic number.

It is an amenable number.

320055551105 is a deficient number, since it is larger than the sum of its proper divisors (64011110227).

320055551105 is an equidigital number, since it uses as much as digits as its factorization.

320055551105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64011110226.

The product of its (nonzero) digits is 18750, while the sum is 32.

The spelling of 320055551105 in words is "three hundred twenty billion, fifty-five million, five hundred fifty-one thousand, one hundred five".