855171348811 has 4 divisors (see below), whose sum is σ = 920953760272. Its totient is φ = 789388937352.

The previous prime is 855171348769. The next prime is 855171348827. The reversal of 855171348811 is 118843171558.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 855171348811 - 2¹¹ = 855171346763 is a prime.

It is a super-2 number, since 2×855171348811² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (855171340811) 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, 32891205711 + ... + 32891205736.

It is an arithmetic number, because the mean of its divisors is an integer number (230238440068).

Almost surely, 2^855171348811 is an apocalyptic number.

855171348811 is a deficient number, since it is larger than the sum of its proper divisors (65782411461).

855171348811 is a wasteful number, since it uses less digits than its factorization.

855171348811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65782411460.

The product of its digits is 1075200, while the sum is 52.

The spelling of 855171348811 in words is "eight hundred fifty-five billion, one hundred seventy-one million, three hundred forty-eight thousand, eight hundred eleven".