523304662451321 has 2 divisors, whose sum is σ = 523304662451322. Its totient is φ = 523304662451320.

The previous prime is 523304662451287. The next prime is 523304662451369. The reversal of 523304662451321 is 123154266403325.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 515123804002921 + 8180858448400 = 22696339^2 + 2860220^2 .

It is a cyclic number.

It is not a de Polignac number, because 523304662451321 - 2⁶ = 523304662451257 is a prime.

It is not a weakly prime, because it can be changed into another prime (523304662457321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 261652331225660 + 261652331225661.

It is an arithmetic number, because the mean of its divisors is an integer number (261652331225661).

Almost surely, 2^{523304662451321} is an apocalyptic number.

It is an amenable number.

523304662451321 is a deficient number, since it is larger than the sum of its proper divisors (1).

523304662451321 is an equidigital number, since it uses as much as digits as its factorization.

523304662451321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3110400, while the sum is 47.

The spelling of 523304662451321 in words is "five hundred twenty-three trillion, three hundred four billion, six hundred sixty-two million, four hundred fifty-one thousand, three hundred twenty-one".