20240073565321 has 2 divisors, whose sum is σ = 20240073565322. Its totient is φ = 20240073565320.

The previous prime is 20240073565241. The next prime is 20240073565333. The reversal of 20240073565321 is 12356537004202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18985505559696 + 1254568005625 = 4357236^2 + 1120075^2 .

It is a cyclic number.

It is not a de Polignac number, because 20240073565321 - 2³¹ = 20237926081673 is a prime.

It is not a weakly prime, because it can be changed into another prime (20240073565381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10120036782660 + 10120036782661.

It is an arithmetic number, because the mean of its divisors is an integer number (10120036782661).

Almost surely, 2^{20240073565321} is an apocalyptic number.

It is an amenable number.

20240073565321 is a deficient number, since it is larger than the sum of its proper divisors (1).

20240073565321 is an equidigital number, since it uses as much as digits as its factorization.

20240073565321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 302400, while the sum is 40.

The spelling of 20240073565321 in words is "twenty trillion, two hundred forty billion, seventy-three million, five hundred sixty-five thousand, three hundred twenty-one".