102105866812 has 12 divisors (see below), whose sum is σ = 179088622776. Its totient is φ = 50937688880.

The previous prime is 102105866801. The next prime is 102105866827. The reversal of 102105866812 is 218668501201.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28809139 + ... + 28812682.

It is an arithmetic number, because the mean of its divisors is an integer number (14924051898).

Almost surely, 2^102105866812 is an apocalyptic number.

It is an amenable number.

102105866812 is a deficient number, since it is larger than the sum of its proper divisors (76982755964).

102105866812 is a wasteful number, since it uses less digits than its factorization.

102105866812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57622268 (or 57622266 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 40.

The spelling of 102105866812 in words is "one hundred two billion, one hundred five million, eight hundred sixty-six thousand, eight hundred twelve".