111666630105 has 16 divisors (see below), whose sum is σ = 198518453760. Its totient is φ = 59555535984.

The previous prime is 111666630091. The next prime is 111666630139. The reversal of 111666630105 is 501036666111.

It is not a de Polignac number, because 111666630105 - 2¹¹ = 111666628057 is a prime.

It is a super-2 number, since 2×111666630105² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 111666630105.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 413579977 + ... + 413580246.

It is an arithmetic number, because the mean of its divisors is an integer number (12407403360).

Almost surely, 2^111666630105 is an apocalyptic number.

111666630105 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

111666630105 is a deficient number, since it is larger than the sum of its proper divisors (86851823655).

111666630105 is an equidigital number, since it uses as much as digits as its factorization.

111666630105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 827160237 (or 827160231 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The spelling of 111666630105 in words is "one hundred eleven billion, six hundred sixty-six million, six hundred thirty thousand, one hundred five".