6447283603216 has 10 divisors (see below), whose sum is σ = 12491611981262. Its totient is φ = 3223641801600.

The previous prime is 6447283603171. The next prime is 6447283603253. The reversal of 6447283603216 is 6123063827446.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 4488974438400 + 1958309164816 = 2118720^2 + 1399396^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201477612585 + ... + 201477612616.

Almost surely, 2^{6447283603216} is an apocalyptic number.

It is an amenable number.

6447283603216 is a deficient number, since it is larger than the sum of its proper divisors (6044328378046).

6447283603216 is a wasteful number, since it uses less digits than its factorization.

6447283603216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 402955225209 (or 402955225203 counting only the distinct ones).

The product of its (nonzero) digits is 6967296, while the sum is 52.

The spelling of 6447283603216 in words is "six trillion, four hundred forty-seven billion, two hundred eighty-three million, six hundred three thousand, two hundred sixteen".