6618665411 has 2 divisors, whose sum is σ = 6618665412. Its totient is φ = 6618665410.

The previous prime is 6618665407. The next prime is 6618665429. The reversal of 6618665411 is 1145668166.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6618665411 - 2² = 6618665407 is a prime.

It is not a weakly prime, because it can be changed into another prime (6618665461) 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 as a sum of consecutive naturals, namely, 3309332705 + 3309332706.

It is an arithmetic number, because the mean of its divisors is an integer number (3309332706).

Almost surely, 2^6618665411 is an apocalyptic number.

6618665411 is a deficient number, since it is larger than the sum of its proper divisors (1).

6618665411 is an equidigital number, since it uses as much as digits as its factorization.

6618665411 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 207360, while the sum is 44.

The square root of 6618665411 is about 81355.1806033273. The cubic root of 6618665411 is about 1877.5440817828.

The spelling of 6618665411 in words is "six billion, six hundred eighteen million, six hundred sixty-five thousand, four hundred eleven".