6611166571 has 2 divisors, whose sum is σ = 6611166572. Its totient is φ = 6611166570.

The previous prime is 6611166563. The next prime is 6611166637. The reversal of 6611166571 is 1756611166.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6611166571 - 2³ = 6611166563 is a prime.

It is not a weakly prime, because it can be changed into another prime (6611466571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3305583285 + 3305583286.

It is an arithmetic number, because the mean of its divisors is an integer number (3305583286).

Almost surely, 2^6611166571 is an apocalyptic number.

6611166571 is a deficient number, since it is larger than the sum of its proper divisors (1).

6611166571 is an equidigital number, since it uses as much as digits as its factorization.

6611166571 is an evil number, because the sum of its binary digits is even.

The product of its digits is 45360, while the sum is 40.

The square root of 6611166571 is about 81309.0804953543. The cubic root of 6611166571 is about 1876.8347382127.

The spelling of 6611166571 in words is "six billion, six hundred eleven million, one hundred sixty-six thousand, five hundred seventy-one".