168909411858 has 16 divisors (see below), whose sum is σ = 368529626016. Its totient is φ = 51184670240.

The previous prime is 168909411809. The next prime is 168909411877. The reversal of 168909411858 is 858114909861.

It is a Curzon number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1279616691 + ... + 1279616822.

It is an arithmetic number, because the mean of its divisors is an integer number (23033101626).

Almost surely, 2^168909411858 is an apocalyptic number.

168909411858 is an abundant number, since it is smaller than the sum of its proper divisors (199620214158).

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

168909411858 is a wasteful number, since it uses less digits than its factorization.

168909411858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2559233529.

The product of its (nonzero) digits is 4976640, while the sum is 60.

The spelling of 168909411858 in words is "one hundred sixty-eight billion, nine hundred nine million, four hundred eleven thousand, eight hundred fifty-eight".