853685893181808 has 240 divisors, whose sum is σ = 2473441575321600. Its totient is φ = 274575213158400.

The previous prime is 853685893181741. The next prime is 853685893181831. The reversal of 853685893181808 is 808181398586358.

853685893181808 is a `hidden beast` number, since 8 + 5 + 3 + 6 + 8 + 589 + 3 + 18 + 18 + 0 + 8 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2852020473 + ... + 2852319783.

It is an arithmetic number, because the mean of its divisors is an integer number (10306006563840).

Almost surely, 2^{853685893181808} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 853685893181808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1236720787660800).

853685893181808 is an abundant number, since it is smaller than the sum of its proper divisors (1619755682139792).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

853685893181808 is a wasteful number, since it uses less digits than its factorization.

853685893181808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301228 (or 301219 counting only the distinct ones).

The product of its (nonzero) digits is 3185049600, while the sum is 81.

The spelling of 853685893181808 in words is "eight hundred fifty-three trillion, six hundred eighty-five billion, eight hundred ninety-three million, one hundred eighty-one thousand, eight hundred eight".