866155335266343 has 16 divisors (see below), whose sum is σ = 1181434280803040. Its totient is φ = 564301779300864.

The previous prime is 866155335266329. The next prime is 866155335266387. The reversal of 866155335266343 is 343662533551668.

It is not a de Polignac number, because 866155335266343 - 2²⁹ = 866154798395431 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (866155335266393) 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, 18142394446 + ... + 18142442187.

It is an arithmetic number, because the mean of its divisors is an integer number (73839642550190).

Almost surely, 2^{866155335266343} is an apocalyptic number.

866155335266343 is a deficient number, since it is larger than the sum of its proper divisors (315278945536697).

866155335266343 is a wasteful number, since it uses less digits than its factorization.

866155335266343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36284836818.

The product of its digits is 839808000, while the sum is 66.

The spelling of 866155335266343 in words is "eight hundred sixty-six trillion, one hundred fifty-five billion, three hundred thirty-five million, two hundred sixty-six thousand, three hundred forty-three".