320144020055 has 16 divisors (see below), whose sum is σ = 393600078144. Its totient is φ = 249904757760.

The previous prime is 320144020019. The next prime is 320144020081. The reversal of 320144020055 is 550020441023.

It is a happy number.

It is not a de Polignac number, because 320144020055 - 2²⁶ = 320076911191 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4614092 + ... + 4682961.

It is an arithmetic number, because the mean of its divisors is an integer number (24600004884).

Almost surely, 2^320144020055 is an apocalyptic number.

320144020055 is a deficient number, since it is larger than the sum of its proper divisors (73456058089).

320144020055 is an equidigital number, since it uses as much as digits as its factorization.

320144020055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9297226.

The product of its (nonzero) digits is 4800, while the sum is 26.

Adding to 320144020055 its reverse (550020441023), we get a palindrome (870164461078).

The spelling of 320144020055 in words is "three hundred twenty billion, one hundred forty-four million, twenty thousand, fifty-five".