168855558861 has 32 divisors (see below), whose sum is σ = 267084183168. Its totient is φ = 93713725440.

The previous prime is 168855558857. The next prime is 168855558869.

168855558861 is nontrivially palindromic in base 10.

168855558861 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 168855558861 - 2² = 168855558857 is a prime.

It is a super-3 number, since 3×168855558861³ (a number of 35 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 168855558792 and 168855558801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168855558869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4046680 + ... + 4088193.

It is an arithmetic number, because the mean of its divisors is an integer number (8346380724).

Almost surely, 2^168855558861 is an apocalyptic number.

168855558861 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

168855558861 is a deficient number, since it is larger than the sum of its proper divisors (98228624307).

168855558861 is a wasteful number, since it uses less digits than its factorization.

168855558861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8134941.

The product of its digits is 92160000, while the sum is 66.

The spelling of 168855558861 in words is "one hundred sixty-eight billion, eight hundred fifty-five million, five hundred fifty-eight thousand, eight hundred sixty-one".