16444173853063 has 4 divisors (see below), whose sum is σ = 17939098748808. Its totient is φ = 14949248957320.

The previous prime is 16444173852991. The next prime is 16444173853067. The reversal of 16444173853063 is 36035837144461.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 16444173853063 - 2²⁹ = 16443636982151 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16444173852995 and 16444173853013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16444173853067) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 747462447856 + ... + 747462447877.

It is an arithmetic number, because the mean of its divisors is an integer number (4484774687202).

Almost surely, 2^{16444173853063} is an apocalyptic number.

16444173853063 is a deficient number, since it is larger than the sum of its proper divisors (1494924895745).

16444173853063 is a wasteful number, since it uses less digits than its factorization.

16444173853063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1494924895744.

The product of its (nonzero) digits is 17418240, while the sum is 55.

The spelling of 16444173853063 in words is "sixteen trillion, four hundred forty-four billion, one hundred seventy-three million, eight hundred fifty-three thousand, sixty-three".