866123857473841 has 8 divisors (see below), whose sum is σ = 866677115715840. Its totient is φ = 865570606959072.

The previous prime is 866123857473821. The next prime is 866123857473859. The reversal of 866123857473841 is 148374758321668.

866123857473841 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 866123857473841 - 2¹¹ = 866123857471793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (866123857473821) 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, 231301116 + ... + 235015858.

It is an arithmetic number, because the mean of its divisors is an integer number (108334639464480).

Almost surely, 2^{866123857473841} is an apocalyptic number.

It is an amenable number.

866123857473841 is a deficient number, since it is larger than the sum of its proper divisors (553258241999).

866123857473841 is a wasteful number, since it uses less digits than its factorization.

866123857473841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3863615.

The product of its digits is 1300561920, while the sum is 73.

The spelling of 866123857473841 in words is "eight hundred sixty-six trillion, one hundred twenty-three billion, eight hundred fifty-seven million, four hundred seventy-three thousand, eight hundred forty-one".