16553326326 has 32 divisors (see below), whose sum is σ = 36001519200. Its totient is φ = 5052842496.

The previous prime is 16553326271. The next prime is 16553326331. The reversal of 16553326326 is 62362335561.

It is a super-2 number, since 2×16553326326² (a number of 21 digits) contains 22 as substring.

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, 2189301 + ... + 2196848.

It is an arithmetic number, because the mean of its divisors is an integer number (1125047475).

Almost surely, 2^16553326326 is an apocalyptic number.

16553326326 is an abundant number, since it is smaller than the sum of its proper divisors (19448192874).

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

16553326326 is a wasteful number, since it uses less digits than its factorization.

16553326326 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4386208.

The product of its digits is 583200, while the sum is 42.

The spelling of 16553326326 in words is "sixteen billion, five hundred fifty-three million, three hundred twenty-six thousand, three hundred twenty-six".