320340044197157 has 2 divisors, whose sum is σ = 320340044197158. Its totient is φ = 320340044197156.

The previous prime is 320340044197153. The next prime is 320340044197163. The reversal of 320340044197157 is 751791440043023.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 312800220173281 + 7539824023876 = 17686159^2 + 2745874^2 .

It is a cyclic number.

It is not a de Polignac number, because 320340044197157 - 2² = 320340044197153 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320340044197153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160170022098578 + 160170022098579.

It is an arithmetic number, because the mean of its divisors is an integer number (160170022098579).

Almost surely, 2^{320340044197157} is an apocalyptic number.

It is an amenable number.

320340044197157 is a deficient number, since it is larger than the sum of its proper divisors (1).

320340044197157 is an equidigital number, since it uses as much as digits as its factorization.

320340044197157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2540160, while the sum is 50.

The spelling of 320340044197157 in words is "three hundred twenty trillion, three hundred forty billion, forty-four million, one hundred ninety-seven thousand, one hundred fifty-seven".