854834178813 has 4 divisors (see below), whose sum is σ = 1139778905088. Its totient is φ = 569889452540.

The previous prime is 854834178791. The next prime is 854834178833. The reversal of 854834178813 is 318871438458.

854834178813 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 854834178813 - 2¹⁰ = 854834177789 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (854834178833) 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, 142472363133 + ... + 142472363138.

It is an arithmetic number, because the mean of its divisors is an integer number (284944726272).

Almost surely, 2^854834178813 is an apocalyptic number.

It is an amenable number.

854834178813 is a deficient number, since it is larger than the sum of its proper divisors (284944726275).

854834178813 is a wasteful number, since it uses less digits than its factorization.

854834178813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284944726274.

The product of its digits is 20643840, while the sum is 60.

The spelling of 854834178813 in words is "eight hundred fifty-four billion, eight hundred thirty-four million, one hundred seventy-eight thousand, eight hundred thirteen".