666111000105 has 12 divisors (see below), whose sum is σ = 1154592400260. Its totient is φ = 355259200032.

The previous prime is 666111000059. The next prime is 666111000173. The reversal of 666111000105 is 501000111666.

It can be written as a sum of positive squares in 2 ways, for example, as 516914985024 + 149196015081 = 718968^2 + 386259^2 .

It is not a de Polignac number, because 666111000105 - 2¹¹ = 666110998057 is a prime.

It is a super-2 number, since 2×666111000105² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7401233290 + ... + 7401233379.

It is an arithmetic number, because the mean of its divisors is an integer number (96216033355).

Almost surely, 2^666111000105 is an apocalyptic number.

It is an amenable number.

666111000105 is a deficient number, since it is larger than the sum of its proper divisors (488481400155).

666111000105 is a wasteful number, since it uses less digits than its factorization.

666111000105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14802466680 (or 14802466677 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 27.

The spelling of 666111000105 in words is "six hundred sixty-six billion, one hundred eleven million, one hundred five", and thus it is an aban number.