321630356611073 has 2 divisors, whose sum is σ = 321630356611074. Its totient is φ = 321630356611072.

The previous prime is 321630356611037. The next prime is 321630356611079. The reversal of 321630356611073 is 370116653036123.

Together with previous prime (321630356611037) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 321199768670209 + 430587940864 = 17922047^2 + 656192^2 .

It is a cyclic number.

It is not a de Polignac number, because 321630356611073 - 2²⁰ = 321630355562497 is a prime.

It is a super-2 number, since 2×321630356611073² (a number of 30 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (321630356611079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160815178305536 + 160815178305537.

It is an arithmetic number, because the mean of its divisors is an integer number (160815178305537).

Almost surely, 2^{321630356611073} is an apocalyptic number.

It is an amenable number.

321630356611073 is a deficient number, since it is larger than the sum of its proper divisors (1).

321630356611073 is an equidigital number, since it uses as much as digits as its factorization.

321630356611073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1224720, while the sum is 47.

The spelling of 321630356611073 in words is "three hundred twenty-one trillion, six hundred thirty billion, three hundred fifty-six million, six hundred eleven thousand, seventy-three".