16644424831713 has 48 divisors (see below), whose sum is σ = 27737520685056. Its totient is φ = 9420777398880.

The previous prime is 16644424831663. The next prime is 16644424831733. The reversal of 16644424831713 is 31713842444661.

16644424831713 is a `hidden beast` number, since 1 + 6 + 6 + 44 + 424 + 8 + 3 + 171 + 3 = 666.

It is not a de Polignac number, because 16644424831713 - 2⁹ = 16644424831201 is a prime.

It is a super-3 number, since 3×16644424831713³ (a number of 41 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 16644424831713.

It is not an unprimeable number, because it can be changed into a prime (16644424831733) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 44919520 + ... + 45288542.

It is an arithmetic number, because the mean of its divisors is an integer number (577865014272).

Almost surely, 2^{16644424831713} is an apocalyptic number.

It is an amenable number.

16644424831713 is a deficient number, since it is larger than the sum of its proper divisors (11093095853343).

16644424831713 is a wasteful number, since it uses less digits than its factorization.

16644424831713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 375834 (or 375831 counting only the distinct ones).

The product of its digits is 9289728, while the sum is 54.

The spelling of 16644424831713 in words is "sixteen trillion, six hundred forty-four billion, four hundred twenty-four million, eight hundred thirty-one thousand, seven hundred thirteen".