105666114987 has 24 divisors (see below), whose sum is σ = 160686078800. Its totient is φ = 66726462528.

The previous prime is 105666114947. The next prime is 105666115013. The reversal of 105666114987 is 789411666501.

It is not a de Polignac number, because 105666114987 - 2⁸ = 105666114731 is a prime.

It is a super-2 number, since 2×105666114987² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (105666114937) 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 in 23 ways as a sum of consecutive naturals, for example, 1190589 + ... + 1276257.

Almost surely, 2^105666114987 is an apocalyptic number.

105666114987 is a deficient number, since it is larger than the sum of its proper divisors (55019963813).

105666114987 is a wasteful number, since it uses less digits than its factorization.

105666114987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92907 (or 92904 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 54.

The spelling of 105666114987 in words is "one hundred five billion, six hundred sixty-six million, one hundred fourteen thousand, nine hundred eighty-seven".