866488110406 has 4 divisors (see below), whose sum is σ = 1299732165612. Its totient is φ = 433244055202.

The previous prime is 866488110359. The next prime is 866488110409. The reversal of 866488110406 is 604011884668.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (866488110409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 216622027600 + ... + 216622027603.

It is an arithmetic number, because the mean of its divisors is an integer number (324933041403).

Almost surely, 2^866488110406 is an apocalyptic number.

866488110406 is a deficient number, since it is larger than the sum of its proper divisors (433244055206).

866488110406 is a wasteful number, since it uses less digits than its factorization.

866488110406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 433244055205.

The product of its (nonzero) digits is 1769472, while the sum is 52.

The spelling of 866488110406 in words is "eight hundred sixty-six billion, four hundred eighty-eight million, one hundred ten thousand, four hundred six".