866423027109 has 8 divisors (see below), whose sum is σ = 1155252447360. Its totient is φ = 577604479136.

The previous prime is 866423027101. The next prime is 866423027111. The reversal of 866423027109 is 901720324668.

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

It is a cyclic number.

It is not a de Polignac number, because 866423027109 - 2³ = 866423027101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (866423027101) 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, 2530269 + ... + 2852210.

It is an arithmetic number, because the mean of its divisors is an integer number (144406555920).

Almost surely, 2^866423027109 is an apocalyptic number.

It is an amenable number.

866423027109 is a deficient number, since it is larger than the sum of its proper divisors (288829420251).

866423027109 is a wasteful number, since it uses less digits than its factorization.

866423027109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5436139.

The product of its (nonzero) digits is 870912, while the sum is 48.

The spelling of 866423027109 in words is "eight hundred sixty-six billion, four hundred twenty-three million, twenty-seven thousand, one hundred nine".