320326261153 has 2 divisors, whose sum is σ = 320326261154. Its totient is φ = 320326261152.

The previous prime is 320326261111. The next prime is 320326261183. The reversal of 320326261153 is 351162623023.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 319413737889 + 912523264 = 565167^2 + 30208^2 .

It is a cyclic number.

It is not a de Polignac number, because 320326261153 - 2²¹ = 320324164001 is a prime.

It is not a weakly prime, because it can be changed into another prime (320326261103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160163130576 + 160163130577.

It is an arithmetic number, because the mean of its divisors is an integer number (160163130577).

Almost surely, 2^320326261153 is an apocalyptic number.

It is an amenable number.

320326261153 is a deficient number, since it is larger than the sum of its proper divisors (1).

320326261153 is an equidigital number, since it uses as much as digits as its factorization.

320326261153 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 38880, while the sum is 34.

Adding to 320326261153 its reverse (351162623023), we get a palindrome (671488884176).

The spelling of 320326261153 in words is "three hundred twenty billion, three hundred twenty-six million, two hundred sixty-one thousand, one hundred fifty-three".