168550985490 has 16 divisors (see below), whose sum is σ = 404522365248. Its totient is φ = 44946929456.

The previous prime is 168550985489. The next prime is 168550985497. The reversal of 168550985490 is 94589055861.

It is not an unprimeable number, because it can be changed into a prime (168550985497) 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, 2809183062 + ... + 2809183121.

It is an arithmetic number, because the mean of its divisors is an integer number (25282647828).

Almost surely, 2^168550985490 is an apocalyptic number.

168550985490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

168550985490 is an abundant number, since it is smaller than the sum of its proper divisors (235971379758).

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

168550985490 is a wasteful number, since it uses less digits than its factorization.

168550985490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5618366193.

The product of its (nonzero) digits is 15552000, while the sum is 60.

The spelling of 168550985490 in words is "one hundred sixty-eight billion, five hundred fifty million, nine hundred eighty-five thousand, four hundred ninety".