853668866358 has 144 divisors (see below), whose sum is σ = 2344805342880. Its totient is φ = 219697505280.

The previous prime is 853668866329. The next prime is 853668866443.

853668866358 is a `hidden beast` number, since 8 + 536 + 6 + 8 + 86 + 6 + 3 + 5 + 8 = 666.

853668866358 is nontrivially palindromic in base 10.

It is a congruent number.

It is an unprimeable number.

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 71 ways as a sum of consecutive naturals, for example, 1404966 + ... + 1918662.

Almost surely, 2^853668866358 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 853668866358, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1172402671440).

853668866358 is an abundant number, since it is smaller than the sum of its proper divisors (1491136476522).

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

853668866358 is a wasteful number, since it uses less digits than its factorization.

853668866358 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 513843 (or 513829 counting only the distinct ones).

The product of its digits is 1194393600, while the sum is 72.

The spelling of 853668866358 in words is "eight hundred fifty-three billion, six hundred sixty-eight million, eight hundred sixty-six thousand, three hundred fifty-eight".