865254323873 has 4 divisors (see below), whose sum is σ = 916151637060. Its totient is φ = 814357010688.

The previous prime is 865254323827. The next prime is 865254323891. The reversal of 865254323873 is 378323452568.

865254323873 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 347384108449 + 517870215424 = 589393^2 + 719632^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-865254323873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (865254323173) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25448656568 + ... + 25448656601.

It is an arithmetic number, because the mean of its divisors is an integer number (229037909265).

Almost surely, 2^865254323873 is an apocalyptic number.

It is an amenable number.

865254323873 is a deficient number, since it is larger than the sum of its proper divisors (50897313187).

865254323873 is a wasteful number, since it uses less digits than its factorization.

865254323873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50897313186.

The product of its digits is 29030400, while the sum is 56.

The spelling of 865254323873 in words is "eight hundred sixty-five billion, two hundred fifty-four million, three hundred twenty-three thousand, eight hundred seventy-three".