6555743227321 has 2 divisors, whose sum is σ = 6555743227322. Its totient is φ = 6555743227320.

The previous prime is 6555743227307. The next prime is 6555743227331. The reversal of 6555743227321 is 1237223475556.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5079664023721 + 1476079203600 = 2253811^2 + 1214940^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6555743227321 is a prime.

It is not a weakly prime, because it can be changed into another prime (6555743227301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3277871613660 + 3277871613661.

It is an arithmetic number, because the mean of its divisors is an integer number (3277871613661).

Almost surely, 2^{6555743227321} is an apocalyptic number.

It is an amenable number.

6555743227321 is a deficient number, since it is larger than the sum of its proper divisors (1).

6555743227321 is an equidigital number, since it uses as much as digits as its factorization.

6555743227321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10584000, while the sum is 52.

The spelling of 6555743227321 in words is "six trillion, five hundred fifty-five billion, seven hundred forty-three million, two hundred twenty-seven thousand, three hundred twenty-one".