866763317442402 has 12 divisors (see below), whose sum is σ = 1877987187791910. Its totient is φ = 288921105814128.

The previous prime is 866763317442247. The next prime is 866763317442403. The reversal of 866763317442402 is 204244713367668.

866763317442402 is a `hidden beast` number, since 8 + 6 + 6 + 7 + 6 + 33 + 174 + 424 + 0 + 2 = 666.

866763317442402 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 826223342298201 + 40539975144201 = 28744101^2 + 6367101^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 866763317442402.

It is not an unprimeable number, because it can be changed into a prime (866763317442403) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 24076758817827 + ... + 24076758817862.

Almost surely, 2^{866763317442402} is an apocalyptic number.

866763317442402 is an abundant number, since it is smaller than the sum of its proper divisors (1011223870349508).

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

866763317442402 is a wasteful number, since it uses less digits than its factorization.

866763317442402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48153517635697 (or 48153517635694 counting only the distinct ones).

The product of its (nonzero) digits is 195084288, while the sum is 63.

The spelling of 866763317442402 in words is "eight hundred sixty-six trillion, seven hundred sixty-three billion, three hundred seventeen million, four hundred forty-two thousand, four hundred two".