866418608041 has 12 divisors (see below), whose sum is σ = 1067161455828. Its totient is φ = 698959548672.

The previous prime is 866418608039. The next prime is 866418608051. The reversal of 866418608041 is 140806814668.

It can be written as a sum of positive squares in 2 ways, for example, as 547938972441 + 318479635600 = 740229^2 + 564340^2 .

It is not a de Polignac number, because 866418608041 - 2¹ = 866418608039 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 866418608041.

It is not an unprimeable number, because it can be changed into a prime (866418608051) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 520058356 + ... + 520060021.

It is an arithmetic number, because the mean of its divisors is an integer number (88930121319).

Almost surely, 2^866418608041 is an apocalyptic number.

It is an amenable number.

866418608041 is a deficient number, since it is larger than the sum of its proper divisors (200742847787).

866418608041 is a wasteful number, since it uses less digits than its factorization.

866418608041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1040118408 (or 1040118401 counting only the distinct ones).

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

The spelling of 866418608041 in words is "eight hundred sixty-six billion, four hundred eighteen million, six hundred eight thousand, forty-one".