6566650551 has 12 divisors (see below), whose sum is σ = 9664127928. Its totient is φ = 4295167344.

The previous prime is 6566650511. The next prime is 6566650589. The reversal of 6566650551 is 1550566656.

It is not a de Polignac number, because 6566650551 - 2⁹ = 6566650039 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6566650497 and 6566650506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6566650501) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6882805 + ... + 6883758.

It is an arithmetic number, because the mean of its divisors is an integer number (805343994).

Almost surely, 2^6566650551 is an apocalyptic number.

6566650551 is a deficient number, since it is larger than the sum of its proper divisors (3097477377).

6566650551 is a wasteful number, since it uses less digits than its factorization.

6566650551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13766622 (or 13766619 counting only the distinct ones).

The product of its (nonzero) digits is 810000, while the sum is 45.

The square root of 6566650551 is about 81034.8724377351. The cubic root of 6566650551 is about 1872.6127177077.

The spelling of 6566650551 in words is "six billion, five hundred sixty-six million, six hundred fifty thousand, five hundred fifty-one".