321553231263053 has 2 divisors, whose sum is σ = 321553231263054. Its totient is φ = 321553231263052.

The previous prime is 321553231263037. The next prime is 321553231263083. The reversal of 321553231263053 is 350362132355123.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 318496741311529 + 3056489951524 = 17846477^2 + 1748282^2 .

It is a cyclic number.

It is not a de Polignac number, because 321553231263053 - 2⁴ = 321553231263037 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 321553231262995 and 321553231263013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (321553231263023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160776615631526 + 160776615631527.

It is an arithmetic number, because the mean of its divisors is an integer number (160776615631527).

Almost surely, 2^{321553231263053} is an apocalyptic number.

It is an amenable number.

321553231263053 is a deficient number, since it is larger than the sum of its proper divisors (1).

321553231263053 is an equidigital number, since it uses as much as digits as its factorization.

321553231263053 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1458000, while the sum is 44.

The spelling of 321553231263053 in words is "three hundred twenty-one trillion, five hundred fifty-three billion, two hundred thirty-one million, two hundred sixty-three thousand, fifty-three".