320153173608943 has 2 divisors, whose sum is σ = 320153173608944. Its totient is φ = 320153173608942.

The previous prime is 320153173608913. The next prime is 320153173608971. The reversal of 320153173608943 is 349806371351023.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (349806371351023) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 320153173608943 - 2⁹ = 320153173608431 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320153173608913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160076586804471 + 160076586804472.

It is an arithmetic number, because the mean of its divisors is an integer number (160076586804472).

It is a 1-persistent number, because it is pandigital, but 2⋅320153173608943 = 640306347217886 is not.

Almost surely, 2^{320153173608943} is an apocalyptic number.

320153173608943 is a deficient number, since it is larger than the sum of its proper divisors (1).

320153173608943 is an equidigital number, since it uses as much as digits as its factorization.

320153173608943 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9797760, while the sum is 55.

The spelling of 320153173608943 in words is "three hundred twenty trillion, one hundred fifty-three billion, one hundred seventy-three million, six hundred eight thousand, nine hundred forty-three".