6566646337630 has 16 divisors (see below), whose sum is σ = 11827228319280. Its totient is φ = 2625044110272.

The previous prime is 6566646337597. The next prime is 6566646337631. The reversal of 6566646337630 is 367336466656.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6566646337631) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 201786015 + ... + 201818554.

It is an arithmetic number, because the mean of its divisors is an integer number (739201769955).

Almost surely, 2^{6566646337630} is an apocalyptic number.

6566646337630 is a deficient number, since it is larger than the sum of its proper divisors (5260581981650).

6566646337630 is a wasteful number, since it uses less digits than its factorization.

6566646337630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 403606203.

The product of its (nonzero) digits is 176359680, while the sum is 61.

The spelling of 6566646337630 in words is "six trillion, five hundred sixty-six billion, six hundred forty-six million, three hundred thirty-seven thousand, six hundred thirty".