16636423144 has 32 divisors (see below), whose sum is σ = 34177687200. Its totient is φ = 7528979520.

The previous prime is 16636423117. The next prime is 16636423151. The reversal of 16636423144 is 44132463661.

It is a junction number, because it is equal to n+sod(n) for n = 16636423097 and 16636423106.

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 7 ways as a sum of consecutive naturals, for example, 392622 + ... + 432925.

It is an arithmetic number, because the mean of its divisors is an integer number (1068052725).

Almost surely, 2^16636423144 is an apocalyptic number.

It is an amenable number.

16636423144 is an abundant number, since it is smaller than the sum of its proper divisors (17541264056).

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

16636423144 is a wasteful number, since it uses less digits than its factorization.

16636423144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 825793 (or 825789 counting only the distinct ones).

The product of its digits is 248832, while the sum is 40.

The spelling of 16636423144 in words is "sixteen billion, six hundred thirty-six million, four hundred twenty-three thousand, one hundred forty-four".