168518385050 has 24 divisors (see below), whose sum is σ = 313507065216. Its totient is φ = 67393833840.

The previous prime is 168518385037. The next prime is 168518385143. The reversal of 168518385050 is 50583815861.

It is a Harshad number since it is a multiple of its sum of digits (50).

It is a self number, because there is not a number n which added to its sum of digits gives 168518385050.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 84344 + ... + 586643.

It is an arithmetic number, because the mean of its divisors is an integer number (13062794384).

Almost surely, 2^168518385050 is an apocalyptic number.

168518385050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

168518385050 is a deficient number, since it is larger than the sum of its proper divisors (144988680166).

168518385050 is a wasteful number, since it uses less digits than its factorization.

168518385050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 676022 (or 676017 counting only the distinct ones).

The product of its (nonzero) digits is 1152000, while the sum is 50.

The spelling of 168518385050 in words is "one hundred sixty-eight billion, five hundred eighteen million, three hundred eighty-five thousand, fifty".