321545564450233 has 2 divisors, whose sum is σ = 321545564450234. Its totient is φ = 321545564450232.

The previous prime is 321545564450213. The next prime is 321545564450281. The reversal of 321545564450233 is 332054465545123.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 181422662078329 + 140122902371904 = 13469323^2 + 11837352^2 .

It is a cyclic number.

It is not a de Polignac number, because 321545564450233 - 2⁴⁵ = 286361192361401 is a prime.

It is not a weakly prime, because it can be changed into another prime (321545564450213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160772782225116 + 160772782225117.

It is an arithmetic number, because the mean of its divisors is an integer number (160772782225117).

Almost surely, 2^{321545564450233} is an apocalyptic number.

It is an amenable number.

321545564450233 is a deficient number, since it is larger than the sum of its proper divisors (1).

321545564450233 is an equidigital number, since it uses as much as digits as its factorization.

321545564450233 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920000, while the sum is 52.

The spelling of 321545564450233 in words is "three hundred twenty-one trillion, five hundred forty-five billion, five hundred sixty-four million, four hundred fifty thousand, two hundred thirty-three".