16551441403256 has 8 divisors (see below), whose sum is σ = 31033952631120. Its totient is φ = 8275720701624.

The previous prime is 16551441403223. The next prime is 16551441403297. The reversal of 16551441403256 is 65230414415561.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 16551441403256.

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 as a sum of consecutive naturals, namely, 1034465087696 + ... + 1034465087711.

It is an arithmetic number, because the mean of its divisors is an integer number (3879244078890).

Almost surely, 2^{16551441403256} is an apocalyptic number.

It is an amenable number.

16551441403256 is a deficient number, since it is larger than the sum of its proper divisors (14482511227864).

16551441403256 is a wasteful number, since it uses less digits than its factorization.

16551441403256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2068930175413 (or 2068930175409 counting only the distinct ones).

The product of its (nonzero) digits is 1728000, while the sum is 47.

The spelling of 16551441403256 in words is "sixteen trillion, five hundred fifty-one billion, four hundred forty-one million, four hundred three thousand, two hundred fifty-six".