866949343340 has 48 divisors (see below), whose sum is σ = 1856128750560. Its totient is φ = 340019496960.

The previous prime is 866949343283. The next prime is 866949343343. The reversal of 866949343340 is 43343949668.

It is a self number, because there is not a number n which added to its sum of digits gives 866949343340.

It is not an unprimeable number, because it can be changed into a prime (866949343343) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1404956 + ... + 1925564.

It is an arithmetic number, because the mean of its divisors is an integer number (38669348970).

Almost surely, 2^866949343340 is an apocalyptic number.

It is an amenable number.

866949343340 is an abundant number, since it is smaller than the sum of its proper divisors (989179407220).

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

866949343340 is a wasteful number, since it uses less digits than its factorization.

866949343340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 522242 (or 522240 counting only the distinct ones).

The product of its (nonzero) digits is 40310784, while the sum is 59.

The spelling of 866949343340 in words is "eight hundred sixty-six billion, nine hundred forty-nine million, three hundred forty-three thousand, three hundred forty".