6656550071 has 2 divisors, whose sum is σ = 6656550072. Its totient is φ = 6656550070.

The previous prime is 6656550067. The next prime is 6656550127. The reversal of 6656550071 is 1700556566.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6656550071 - 2² = 6656550067 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6656150071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3328275035 + 3328275036.

It is an arithmetic number, because the mean of its divisors is an integer number (3328275036).

Almost surely, 2^6656550071 is an apocalyptic number.

6656550071 is a deficient number, since it is larger than the sum of its proper divisors (1).

6656550071 is an equidigital number, since it uses as much as digits as its factorization.

6656550071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 189000, while the sum is 41.

The square root of 6656550071 is about 81587.6833290418. The cubic root of 6656550071 is about 1881.1195677004.

The spelling of 6656550071 in words is "six billion, six hundred fifty-six million, five hundred fifty thousand, seventy-one".