6611166563 has 2 divisors, whose sum is σ = 6611166564. Its totient is φ = 6611166562.

The previous prime is 6611166493. The next prime is 6611166571. The reversal of 6611166563 is 3656611166.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6611166563 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6611166563.

It is not a weakly prime, because it can be changed into another prime (6611168563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3305583281 + 3305583282.

It is an arithmetic number, because the mean of its divisors is an integer number (3305583282).

Almost surely, 2^6611166563 is an apocalyptic number.

6611166563 is a deficient number, since it is larger than the sum of its proper divisors (1).

6611166563 is an equidigital number, since it uses as much as digits as its factorization.

6611166563 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 116640, while the sum is 41.

The square root of 6611166563 is about 81309.0804461593. The cubic root of 6611166563 is about 1876.8347374557.

The spelling of 6611166563 in words is "six billion, six hundred eleven million, one hundred sixty-six thousand, five hundred sixty-three".