105666610866 has 32 divisors (see below), whose sum is σ = 214354176000. Its totient is φ = 34722245376.

The previous prime is 105666610853. The next prime is 105666610871. The reversal of 105666610866 is 668016666501.

It is a super-2 number, since 2×105666610866² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

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, 321991 + ... + 561258.

It is an arithmetic number, because the mean of its divisors is an integer number (6698568000).

Almost surely, 2^105666610866 is an apocalyptic number.

105666610866 is an abundant number, since it is smaller than the sum of its proper divisors (108687565134).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

105666610866 is a wasteful number, since it uses less digits than its factorization.

105666610866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 883538.

The product of its (nonzero) digits is 1866240, while the sum is 51.

The spelling of 105666610866 in words is "one hundred five billion, six hundred sixty-six million, six hundred ten thousand, eight hundred sixty-six".