168078884285 has 16 divisors (see below), whose sum is σ = 217474271280. Its totient is φ = 123968570880.

The previous prime is 168078884279. The next prime is 168078884287. The reversal of 168078884285 is 582488870861.

168078884285 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 17983078201 + 150095806084 = 134101^2 + 387422^2 .

It is not a de Polignac number, because 168078884285 - 2²⁴ = 168062107069 is a prime.

It is a super-2 number, since 2×168078884285² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (65).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168078884287) 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 15 ways as a sum of consecutive naturals, for example, 1521440 + ... + 1628169.

It is an arithmetic number, because the mean of its divisors is an integer number (13592141955).

Almost surely, 2^168078884285 is an apocalyptic number.

It is an amenable number.

168078884285 is a deficient number, since it is larger than the sum of its proper divisors (49395386995).

168078884285 is a wasteful number, since it uses less digits than its factorization.

168078884285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3150448.

The product of its (nonzero) digits is 55050240, while the sum is 65.

The spelling of 168078884285 in words is "one hundred sixty-eight billion, seventy-eight million, eight hundred eighty-four thousand, two hundred eighty-five".