866158185116446 has 32 divisors (see below), whose sum is σ = 1435477319884800. Its totient is φ = 389881161580416.

The previous prime is 866158185116431. The next prime is 866158185116449. The reversal of 866158185116446 is 644611581851668.

866158185116446 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (866158185116449) 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, 586230595 + ... + 587706241.

It is an arithmetic number, because the mean of its divisors is an integer number (44858666246400).

Almost surely, 2^{866158185116446} is an apocalyptic number.

866158185116446 is a deficient number, since it is larger than the sum of its proper divisors (569319134768354).

866158185116446 is a wasteful number, since it uses less digits than its factorization.

866158185116446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2226288.

The product of its digits is 265420800, while the sum is 70.

The spelling of 866158185116446 in words is "eight hundred sixty-six trillion, one hundred fifty-eight billion, one hundred eighty-five million, one hundred sixteen thousand, four hundred forty-six".