6665111005 has 16 divisors (see below), whose sum is σ = 9538147584. Its totient is φ = 4371649920.

The previous prime is 6665110993. The next prime is 6665111027. The reversal of 6665111005 is 5001115666.

It is not a de Polignac number, because 6665111005 - 2¹⁷ = 6664979933 is a prime.

It is a super-2 number, since 2×6665111005² = 88847409417944220050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 4139016 + ... + 4140625.

It is an arithmetic number, because the mean of its divisors is an integer number (596134224).

Almost surely, 2^6665111005 is an apocalyptic number.

It is an amenable number.

6665111005 is a deficient number, since it is larger than the sum of its proper divisors (2873036579).

6665111005 is a wasteful number, since it uses less digits than its factorization.

6665111005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8279676.

The product of its (nonzero) digits is 5400, while the sum is 31.

The square root of 6665111005 is about 81640.1310937213. The cubic root of 6665111005 is about 1881.9256530059.

The spelling of 6665111005 in words is "six billion, six hundred sixty-five million, one hundred eleven thousand, five".