16644013668152 has 32 divisors (see below), whose sum is σ = 33608970949680. Its totient is φ = 7681654421760.

The previous prime is 16644013668133. The next prime is 16644013668187. The reversal of 16644013668152 is 25186631044661.

It is a super-3 number, since 3×16644013668152³ (a number of 41 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 16644013668094 and 16644013668103.

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 7 ways as a sum of consecutive naturals, for example, 2029403 + ... + 6116085.

Almost surely, 2^{16644013668152} is an apocalyptic number.

It is an amenable number.

16644013668152 is an abundant number, since it is smaller than the sum of its proper divisors (16964957281528).

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

16644013668152 is a wasteful number, since it uses less digits than its factorization.

16644013668152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4125863 (or 4125859 counting only the distinct ones).

The product of its (nonzero) digits is 4976640, while the sum is 53.

The spelling of 16644013668152 in words is "sixteen trillion, six hundred forty-four billion, thirteen million, six hundred sixty-eight thousand, one hundred fifty-two".