16944447685 has 8 divisors (see below), whose sum is σ = 22181822496. Its totient is φ = 12323234640.

The previous prime is 16944447677. The next prime is 16944447749. The reversal of 16944447685 is 58674444961.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 16944447685 - 2³ = 16944447677 is a prime.

It is a super-2 number, since 2×16944447685² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 154040379 + ... + 154040488.

It is an arithmetic number, because the mean of its divisors is an integer number (2772727812).

Almost surely, 2^16944447685 is an apocalyptic number.

It is an amenable number.

16944447685 is a deficient number, since it is larger than the sum of its proper divisors (5237374811).

16944447685 is a wasteful number, since it uses less digits than its factorization.

16944447685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308080883.

The product of its digits is 23224320, while the sum is 58.

The spelling of 16944447685 in words is "sixteen billion, nine hundred forty-four million, four hundred forty-seven thousand, six hundred eighty-five".