2185108968168 has 224 divisors, whose sum is σ = 7109228755200. Its totient is φ = 616413193344.

The previous prime is 2185108968137. The next prime is 2185108968179. The reversal of 2185108968168 is 8618698015812.

2185108968168 is a `hidden beast` number, since 2 + 18 + 510 + 8 + 96 + 8 + 16 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 2886330 + ... + 3563862.

Almost surely, 2^{2185108968168} is an apocalyptic number.

2185108968168 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2185108968168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3554614377600).

2185108968168 is an abundant number, since it is smaller than the sum of its proper divisors (4924119787032).

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

2185108968168 is an equidigital number, since it uses as much as digits as its factorization.

2185108968168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 677643 (or 677624 counting only the distinct ones).

The product of its (nonzero) digits is 13271040, while the sum is 63.

The spelling of 2185108968168 in words is "two trillion, one hundred eighty-five billion, one hundred eight million, nine hundred sixty-eight thousand, one hundred sixty-eight".