6566626816 has 40 divisors (see below), whose sum is σ = 13300235784. Its totient is φ = 3238318080.

The previous prime is 6566626813. The next prime is 6566626817. The reversal of 6566626816 is 6186266656.

It is a happy number.

It is a super-3 number, since 3×6566626816³ (a number of 30 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6566626813) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 50470 + ... + 125221.

Almost surely, 2^6566626816 is an apocalyptic number.

It is an amenable number.

6566626816 is an abundant number, since it is smaller than the sum of its proper divisors (6733608968).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6566626816 is an equidigital number, since it uses as much as digits as its factorization.

6566626816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175782 (or 175766 counting only the distinct ones).

The product of its digits is 3732480, while the sum is 52.

The square root of 6566626816 is about 81034.7259883070. The cubic root of 6566626816 is about 1872.6104615338.

The spelling of 6566626816 in words is "six billion, five hundred sixty-six million, six hundred twenty-six thousand, eight hundred sixteen".