6555444445541 has 2 divisors, whose sum is σ = 6555444445542. Its totient is φ = 6555444445540.

The previous prime is 6555444445531. The next prime is 6555444445573. The reversal of 6555444445541 is 1455444445556.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3700429322500 + 2855015123041 = 1923650^2 + 1689679^2 .

It is a cyclic number.

It is not a de Polignac number, because 6555444445541 - 2⁶ = 6555444445477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6555444445531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3277722222770 + 3277722222771.

It is an arithmetic number, because the mean of its divisors is an integer number (3277722222771).

Almost surely, 2^{6555444445541} is an apocalyptic number.

It is an amenable number.

6555444445541 is a deficient number, since it is larger than the sum of its proper divisors (1).

6555444445541 is an equidigital number, since it uses as much as digits as its factorization.

6555444445541 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 76800000, while the sum is 56.

The spelling of 6555444445541 in words is "six trillion, five hundred fifty-five billion, four hundred forty-four million, four hundred forty-five thousand, five hundred forty-one".