16442621224117 has 4 divisors (see below), whose sum is σ = 17937404971776. Its totient is φ = 14947837476460.

The previous prime is 16442621224013. The next prime is 16442621224129. The reversal of 16442621224117 is 71142212624461.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 16442621224117 - 2¹⁵ = 16442621191349 is a prime.

It is a super-3 number, since 3×16442621224117³ (a number of 41 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16442621224157) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 747391873813 + ... + 747391873834.

It is an arithmetic number, because the mean of its divisors is an integer number (4484351242944).

Almost surely, 2^{16442621224117} is an apocalyptic number.

It is an amenable number.

16442621224117 is a deficient number, since it is larger than the sum of its proper divisors (1494783747659).

16442621224117 is a wasteful number, since it uses less digits than its factorization.

16442621224117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1494783747658.

The product of its digits is 258048, while the sum is 43.

Adding to 16442621224117 its reverse (71142212624461), we get a palindrome (87584833848578).

The spelling of 16442621224117 in words is "sixteen trillion, four hundred forty-two billion, six hundred twenty-one million, two hundred twenty-four thousand, one hundred seventeen".