168538552205 has 8 divisors (see below), whose sum is σ = 204806342400. Its totient is φ = 133124121936.

The previous prime is 168538552201. The next prime is 168538552207. The reversal of 168538552205 is 502255835861.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 168538552205 - 2² = 168538552201 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168538552201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 213339545 + ... + 213340334.

It is an arithmetic number, because the mean of its divisors is an integer number (25600792800).

Almost surely, 2^168538552205 is an apocalyptic number.

It is an amenable number.

168538552205 is a deficient number, since it is larger than the sum of its proper divisors (36267790195).

168538552205 is an equidigital number, since it uses as much as digits as its factorization.

168538552205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 426679963.

The product of its (nonzero) digits is 2880000, while the sum is 50.

The spelling of 168538552205 in words is "one hundred sixty-eight billion, five hundred thirty-eight million, five hundred fifty-two thousand, two hundred five".