866405382294 has 32 divisors (see below), whose sum is σ = 1746735943680. Its totient is φ = 286489356800.

The previous prime is 866405382287. The next prime is 866405382299. The reversal of 866405382294 is 492283504668.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (866405382299) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 641547 + ... + 1464374.

It is an arithmetic number, because the mean of its divisors is an integer number (54585498240).

Almost surely, 2^866405382294 is an apocalyptic number.

866405382294 is an abundant number, since it is smaller than the sum of its proper divisors (880330561386).

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

866405382294 is a wasteful number, since it uses less digits than its factorization.

866405382294 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2106476.

The product of its (nonzero) digits is 19906560, while the sum is 57.

The spelling of 866405382294 in words is "eight hundred sixty-six billion, four hundred five million, three hundred eighty-two thousand, two hundred ninety-four".