6447085219241 has 2 divisors, whose sum is σ = 6447085219242. Its totient is φ = 6447085219240.

The previous prime is 6447085219199. The next prime is 6447085219249. The reversal of 6447085219241 is 1429125807446.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6424176883216 + 22908336025 = 2534596^2 + 151355^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6447085219241 is a prime.

It is not a weakly prime, because it can be changed into another prime (6447085219249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3223542609620 + 3223542609621.

It is an arithmetic number, because the mean of its divisors is an integer number (3223542609621).

Almost surely, 2^{6447085219241} is an apocalyptic number.

It is an amenable number.

6447085219241 is a deficient number, since it is larger than the sum of its proper divisors (1).

6447085219241 is an equidigital number, since it uses as much as digits as its factorization.

6447085219241 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3870720, while the sum is 53.

The spelling of 6447085219241 in words is "six trillion, four hundred forty-seven billion, eighty-five million, two hundred nineteen thousand, two hundred forty-one".