168436869285 has 32 divisors (see below), whose sum is σ = 275801315328. Its totient is φ = 87732751680.

The previous prime is 168436869283. The next prime is 168436869313. The reversal of 168436869285 is 582968634861.

It is not a de Polignac number, because 168436869285 - 2¹ = 168436869283 is a prime.

It is a super-2 number, since 2×168436869285² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168436869281) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8415640 + ... + 8435630.

It is an arithmetic number, because the mean of its divisors is an integer number (8618791104).

Almost surely, 2^168436869285 is an apocalyptic number.

168436869285 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

168436869285 is a deficient number, since it is larger than the sum of its proper divisors (107364446043).

168436869285 is a wasteful number, since it uses less digits than its factorization.

168436869285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33105.

The product of its digits is 119439360, while the sum is 66.

The spelling of 168436869285 in words is "one hundred sixty-eight billion, four hundred thirty-six million, eight hundred sixty-nine thousand, two hundred eighty-five".