320011057165 has 4 divisors (see below), whose sum is σ = 384013268604. Its totient is φ = 256008845728.

The previous prime is 320011057153. The next prime is 320011057207. The reversal of 320011057165 is 561750110023.

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 81904143721 + 238106913444 = 286189^2 + 487962^2 .

It is a cyclic number.

It is not a de Polignac number, because 320011057165 - 2⁵ = 320011057133 is a prime.

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 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, 32001105712 + ... + 32001105721.

It is an arithmetic number, because the mean of its divisors is an integer number (96003317151).

Almost surely, 2^320011057165 is an apocalyptic number.

It is an amenable number.

320011057165 is a deficient number, since it is larger than the sum of its proper divisors (64002211439).

320011057165 is an equidigital number, since it uses as much as digits as its factorization.

320011057165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64002211438.

The product of its (nonzero) digits is 6300, while the sum is 31.

Adding to 320011057165 its reverse (561750110023), we get a palindrome (881761167188).

The spelling of 320011057165 in words is "three hundred twenty billion, eleven million, fifty-seven thousand, one hundred sixty-five".