854623853847 has 24 divisors (see below), whose sum is σ = 1246082213376. Its totient is φ = 564384362256.

The previous prime is 854623853843. The next prime is 854623853861. The reversal of 854623853847 is 748358326458.

854623853847 is a `hidden beast` number, since 8 + 5 + 4 + 62 + 38 + 538 + 4 + 7 = 666.

It is not a de Polignac number, because 854623853847 - 2² = 854623853843 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (854623853843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20382138 + ... + 20424024.

It is an arithmetic number, because the mean of its divisors is an integer number (51920092224).

Almost surely, 2^854623853847 is an apocalyptic number.

854623853847 is a deficient number, since it is larger than the sum of its proper divisors (391458359529).

854623853847 is a wasteful number, since it uses less digits than its factorization.

854623853847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63187 (or 63184 counting only the distinct ones).

The product of its digits is 154828800, while the sum is 63.

The spelling of 854623853847 in words is "eight hundred fifty-four billion, six hundred twenty-three million, eight hundred fifty-three thousand, eight hundred forty-seven".