6665101111 has 2 divisors, whose sum is σ = 6665101112. Its totient is φ = 6665101110.

The previous prime is 6665100983. The next prime is 6665101123. The reversal of 6665101111 is 1111015666.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6665101111 - 2⁷ = 6665100983 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6665101111.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6665101171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3332550555 + 3332550556.

It is an arithmetic number, because the mean of its divisors is an integer number (3332550556).

Almost surely, 2^6665101111 is an apocalyptic number.

6665101111 is a deficient number, since it is larger than the sum of its proper divisors (1).

6665101111 is an equidigital number, since it uses as much as digits as its factorization.

6665101111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1080, while the sum is 28.

The square root of 6665101111 is about 81640.0704984997. The cubic root of 6665101111 is about 1881.9247217996.

Adding to 6665101111 its reverse (1111015666), we get a palindrome (7776116777).

The spelling of 6665101111 in words is "six billion, six hundred sixty-five million, one hundred one thousand, one hundred eleven".