866450861795 has 8 divisors (see below), whose sum is σ = 1046719162800. Its totient is φ = 688508603680.

The previous prime is 866450861737. The next prime is 866450861797. The reversal of 866450861795 is 597168054668.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 866450861795 - 2¹⁰ = 866450860771 is a prime.

It is not an unprimeable number, because it can be changed into a prime (866450861797) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 581509901 + ... + 581511390.

It is an arithmetic number, because the mean of its divisors is an integer number (130839895350).

Almost surely, 2^866450861795 is an apocalyptic number.

866450861795 is a deficient number, since it is larger than the sum of its proper divisors (180268301005).

866450861795 is a wasteful number, since it uses less digits than its factorization.

866450861795 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1163021445.

The product of its (nonzero) digits is 87091200, while the sum is 65.

The spelling of 866450861795 in words is "eight hundred sixty-six billion, four hundred fifty million, eight hundred sixty-one thousand, seven hundred ninety-five".