866786233030850 has 48 divisors (see below), whose sum is σ = 1778549729326560. Its totient is φ = 311653477027200.

The previous prime is 866786233030847. The next prime is 866786233030867. The reversal of 866786233030850 is 58030332687668.

It is an unprimeable number.

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, 8853743012 + ... + 8853840911.

It is an arithmetic number, because the mean of its divisors is an integer number (37053119360970).

Almost surely, 2^{866786233030850} is an apocalyptic number.

866786233030850 is an abundant number, since it is smaller than the sum of its proper divisors (911763496295710).

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

866786233030850 is a wasteful number, since it uses less digits than its factorization.

866786233030850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17707584035 (or 17707584030 counting only the distinct ones).

The product of its (nonzero) digits is 209018880, while the sum is 65.

The spelling of 866786233030850 in words is "eight hundred sixty-six trillion, seven hundred eighty-six billion, two hundred thirty-three million, thirty thousand, eight hundred fifty".