168621005284 has 12 divisors (see below), whose sum is σ = 296717074108. Its totient is φ = 83844698400.

The previous prime is 168621005281. The next prime is 168621005297. The reversal of 168621005284 is 482500126861.

It can be written as a sum of positive squares in 2 ways, for example, as 68005165284 + 100615840000 = 260778^2 + 317200^2 .

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 168621005284.

It is not an unprimeable number, because it can be changed into a prime (168621005281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 116450247 + ... + 116451694.

Almost surely, 2^168621005284 is an apocalyptic number.

It is an amenable number.

168621005284 is a deficient number, since it is larger than the sum of its proper divisors (128096068824).

168621005284 is a wasteful number, since it uses less digits than its factorization.

168621005284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232902126 (or 232902124 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 43.

The spelling of 168621005284 in words is "one hundred sixty-eight billion, six hundred twenty-one million, five thousand, two hundred eighty-four".