53321243404321 has 2 divisors, whose sum is σ = 53321243404322. Its totient is φ = 53321243404320.

The previous prime is 53321243404291. The next prime is 53321243404391. The reversal of 53321243404321 is 12340434212335.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43651973297296 + 9669270107025 = 6606964^2 + 3109545^2 .

It is a cyclic number.

It is not a de Polignac number, because 53321243404321 - 2²⁵ = 53321209849889 is a prime.

It is not a weakly prime, because it can be changed into another prime (53321243404391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26660621702160 + 26660621702161.

It is an arithmetic number, because the mean of its divisors is an integer number (26660621702161).

Almost surely, 2^{53321243404321} is an apocalyptic number.

It is an amenable number.

53321243404321 is a deficient number, since it is larger than the sum of its proper divisors (1).

53321243404321 is an equidigital number, since it uses as much as digits as its factorization.

53321243404321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 207360, while the sum is 37.

Adding to 53321243404321 its reverse (12340434212335), we get a palindrome (65661677616656).

The spelling of 53321243404321 in words is "fifty-three trillion, three hundred twenty-one billion, two hundred forty-three million, four hundred four thousand, three hundred twenty-one".