27908365321168 has 20 divisors (see below), whose sum is σ = 57253190622660. Its totient is φ = 13133348386304.

The previous prime is 27908365321163. The next prime is 27908365321181. The reversal of 27908365321168 is 86112356380972.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 24900818565184 + 3007546755984 = 4990072^2 + 1734228^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27908365321163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51302141863 + ... + 51302142406.

It is an arithmetic number, because the mean of its divisors is an integer number (2862659531133).

Almost surely, 2^{27908365321168} is an apocalyptic number.

It is an amenable number.

27908365321168 is an abundant number, since it is smaller than the sum of its proper divisors (29344825301492).

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

27908365321168 is a wasteful number, since it uses less digits than its factorization.

27908365321168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102604284294 (or 102604284288 counting only the distinct ones).

The product of its (nonzero) digits is 26127360, while the sum is 61.

The spelling of 27908365321168 in words is "twenty-seven trillion, nine hundred eight billion, three hundred sixty-five million, three hundred twenty-one thousand, one hundred sixty-eight".