20004304400166 has 32 divisors (see below), whose sum is σ = 40529368212480. Its totient is φ = 6581862821664.

The previous prime is 20004304400153. The next prime is 20004304400177. The reversal of 20004304400166 is 66100440340002.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 69179350 + ... + 69467913.

It is an arithmetic number, because the mean of its divisors is an integer number (1266542756640).

Almost surely, 2^{20004304400166} is an apocalyptic number.

20004304400166 is an abundant number, since it is smaller than the sum of its proper divisors (20525063812314).

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

20004304400166 is a wasteful number, since it uses less digits than its factorization.

20004304400166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138647580.

The product of its (nonzero) digits is 13824, while the sum is 30.

Adding to 20004304400166 its reverse (66100440340002), we get a palindrome (86104744740168).

The spelling of 20004304400166 in words is "twenty trillion, four billion, three hundred four million, four hundred thousand, one hundred sixty-six".