6424641223321 has 2 divisors, whose sum is σ = 6424641223322. Its totient is φ = 6424641223320.

The previous prime is 6424641223199. The next prime is 6424641223379. The reversal of 6424641223321 is 1233221464246.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6180017009296 + 244624214025 = 2485964^2 + 494595^2 .

It is a cyclic number.

It is not a de Polignac number, because 6424641223321 - 2¹³ = 6424641215129 is a prime.

It is not a weakly prime, because it can be changed into another prime (6424641223381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3212320611660 + 3212320611661.

It is an arithmetic number, because the mean of its divisors is an integer number (3212320611661).

Almost surely, 2^{6424641223321} is an apocalyptic number.

It is an amenable number.

6424641223321 is a deficient number, since it is larger than the sum of its proper divisors (1).

6424641223321 is an equidigital number, since it uses as much as digits as its factorization.

6424641223321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 331776, while the sum is 40.

Adding to 6424641223321 its reverse (1233221464246), we get a palindrome (7657862687567).

The spelling of 6424641223321 in words is "six trillion, four hundred twenty-four billion, six hundred forty-one million, two hundred twenty-three thousand, three hundred twenty-one".