1323376445161 has 9 divisors (see below), whose sum is σ = 1328491111941. Its totient is φ = 1318281407712.

The previous prime is 1323376445159. The next prime is 1323376445177. The reversal of 1323376445161 is 1615446733231.

The square root of 1323376445161 is 1150381.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 976007660761 + 347368784400 = 987931^2 + 589380^2 .

It is not a de Polignac number, because 1323376445161 - 2¹ = 1323376445159 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1323376445191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 318653461 + ... + 318657613.

It is an arithmetic number, because the mean of its divisors is an integer number (147610123549).

Almost surely, 2^{1323376445161} is an apocalyptic number.

1323376445161 is the 1150381-st square number.

1323376445161 is the 575191-st centered octagonal number.

It is an amenable number.

1323376445161 is a deficient number, since it is larger than the sum of its proper divisors (5114666780).

1323376445161 is an frugal number, since it uses more digits than its factorization.

1323376445161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8860 (or 4430 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 46.

The spelling of 1323376445161 in words is "one trillion, three hundred twenty-three billion, three hundred seventy-six million, four hundred forty-five thousand, one hundred sixty-one".