1323553026361 has 2 divisors, whose sum is σ = 1323553026362. Its totient is φ = 1323553026360.

The previous prime is 1323553026359. The next prime is 1323553026373. The reversal of 1323553026361 is 1636203553231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 915303591225 + 408249435136 = 956715^2 + 638944^2 .

It is a cyclic number.

It is not a de Polignac number, because 1323553026361 - 2¹ = 1323553026359 is a prime.

It is a super-2 number, since 2×1323553026361² (a number of 25 digits) contains 22 as substring.

Together with 1323553026359, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1323553026331) 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 as a sum of consecutive naturals, namely, 661776513180 + 661776513181.

It is an arithmetic number, because the mean of its divisors is an integer number (661776513181).

Almost surely, 2^{1323553026361} is an apocalyptic number.

It is an amenable number.

1323553026361 is a deficient number, since it is larger than the sum of its proper divisors (1).

1323553026361 is an equidigital number, since it uses as much as digits as its factorization.

1323553026361 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 291600, while the sum is 40.

Adding to 1323553026361 its reverse (1636203553231), we get a palindrome (2959756579592).

The spelling of 1323553026361 in words is "one trillion, three hundred twenty-three billion, five hundred fifty-three million, twenty-six thousand, three hundred sixty-one".