6665511056 has 10 divisors (see below), whose sum is σ = 12914427702. Its totient is φ = 3332755520.

The previous prime is 6665511043. The next prime is 6665511077. The reversal of 6665511056 is 6501155666.

It can be written as a sum of positive squares in only one way, i.e., 5287616656 + 1377894400 = 72716^2 + 37120^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 208297205 + ... + 208297236.

Almost surely, 2^6665511056 is an apocalyptic number.

It is an amenable number.

6665511056 is a deficient number, since it is larger than the sum of its proper divisors (6248916646).

6665511056 is a wasteful number, since it uses less digits than its factorization.

6665511056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 416594449 (or 416594443 counting only the distinct ones).

The product of its (nonzero) digits is 162000, while the sum is 41.

The square root of 6665511056 is about 81642.5811448903. The cubic root of 6665511056 is about 1881.9633043507.

The spelling of 6665511056 in words is "six billion, six hundred sixty-five million, five hundred eleven thousand, fifty-six".