168809322400818 has 32 divisors (see below), whose sum is σ = 369354623568192. Its totient is φ = 51009426969600.

The previous prime is 168809322400813. The next prime is 168809322400847. The reversal of 168809322400818 is 818004223908861.

It is a super-2 number, since 2×168809322400818² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (168809322400813) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3622805323 + ... + 3622851918.

It is an arithmetic number, because the mean of its divisors is an integer number (11542331986506).

Almost surely, 2^{168809322400818} is an apocalyptic number.

168809322400818 is an abundant number, since it is smaller than the sum of its proper divisors (200545301167374).

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

168809322400818 is a wasteful number, since it uses less digits than its factorization.

168809322400818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7245657610.

The product of its (nonzero) digits is 10616832, while the sum is 60.

The spelling of 168809322400818 in words is "one hundred sixty-eight trillion, eight hundred nine billion, three hundred twenty-two million, four hundred thousand, eight hundred eighteen".