866432085423 has 8 divisors (see below), whose sum is σ = 1158390582528. Its totient is φ = 576047489304.

The previous prime is 866432085401. The next prime is 866432085443. The reversal of 866432085423 is 324580234668.

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

It is not a de Polignac number, because 866432085423 - 2²⁰ = 866431036847 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (866432085443) 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 in 7 ways as a sum of consecutive naturals, for example, 393473961 + ... + 393476162.

It is an arithmetic number, because the mean of its divisors is an integer number (144798822816).

Almost surely, 2^866432085423 is an apocalyptic number.

866432085423 is a deficient number, since it is larger than the sum of its proper divisors (291958497105).

866432085423 is a wasteful number, since it uses less digits than its factorization.

866432085423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 786950493.

The product of its (nonzero) digits is 6635520, while the sum is 51.

The spelling of 866432085423 in words is "eight hundred sixty-six billion, four hundred thirty-two million, eighty-five thousand, four hundred twenty-three".