848658856849 has 4 divisors (see below), whose sum is σ = 849148563636. Its totient is φ = 848169150064.

The previous prime is 848658856817. The next prime is 848658856873. The reversal of 848658856849 is 948658856848.

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 375287336449 + 473371520400 = 612607^2 + 688020^2 .

It is a cyclic number.

It is not a de Polignac number, because 848658856849 - 2⁵ = 848658856817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (848658856879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 244850794 + ... + 244854259.

It is an arithmetic number, because the mean of its divisors is an integer number (212287140909).

Almost surely, 2^848658856849 is an apocalyptic number.

It is an amenable number.

848658856849 is a deficient number, since it is larger than the sum of its proper divisors (489706787).

848658856849 is a wasteful number, since it uses less digits than its factorization.

848658856849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 489706786.

The product of its digits is 4246732800, while the sum is 79.

Subtracting 848658856849 from its reverse (948658856848), we obtain a palindrome (99999999999).

The spelling of 848658856849 in words is "eight hundred forty-eight billion, six hundred fifty-eight million, eight hundred fifty-six thousand, eight hundred forty-nine".