866603050212 has 12 divisors (see below), whose sum is σ = 2022073783856. Its totient is φ = 288867683400.

The previous prime is 866603050211. The next prime is 866603050213. The reversal of 866603050212 is 212050306668.

It is an interprime number because it is at equal distance from previous prime (866603050211) and next prime (866603050213).

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (866603050211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36108460414 + ... + 36108460437.

Almost surely, 2^866603050212 is an apocalyptic number.

It is an amenable number.

866603050212 is an abundant number, since it is smaller than the sum of its proper divisors (1155470733644).

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

866603050212 is a wasteful number, since it uses less digits than its factorization.

866603050212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72216920858 (or 72216920856 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 39.

The spelling of 866603050212 in words is "eight hundred sixty-six billion, six hundred three million, fifty thousand, two hundred twelve".