6503311066 has 12 divisors (see below), whose sum is σ = 11347614378. Its totient is φ = 2787133272.

The previous prime is 6503311039. The next prime is 6503311081. The reversal of 6503311066 is 6601133056.

It can be written as a sum of positive squares in only one way, i.e., 6463356025 + 39955041 = 80395^2 + 6321^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 33180061 + ... + 33180256.

Almost surely, 2^6503311066 is an apocalyptic number.

6503311066 is a deficient number, since it is larger than the sum of its proper divisors (4844303312).

6503311066 is a wasteful number, since it uses less digits than its factorization.

6503311066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66360333 (or 66360326 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 31.

The square root of 6503311066 is about 80643.1092282533. The cubic root of 6503311066 is about 1866.5724115602.

The spelling of 6503311066 in words is "six billion, five hundred three million, three hundred eleven thousand, sixty-six".