16636426404 has 96 divisors (see below), whose sum is σ = 43794240000. Its totient is φ = 4879719936.

The previous prime is 16636426403. The next prime is 16636426441. The reversal of 16636426404 is 40462463661.

It is not an unprimeable number, because it can be changed into a prime (16636426403) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 334122 + ... + 380670.

It is an arithmetic number, because the mean of its divisors is an integer number (456190000).

Almost surely, 2^16636426404 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16636426404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21897120000).

16636426404 is an abundant number, since it is smaller than the sum of its proper divisors (27157813596).

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

16636426404 is a wasteful number, since it uses less digits than its factorization.

16636426404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46677 (or 46675 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 42.

The spelling of 16636426404 in words is "sixteen billion, six hundred thirty-six million, four hundred twenty-six thousand, four hundred four".