16694544549661 has 8 divisors (see below), whose sum is σ = 19283538089664. Its totient is φ = 14284102288320.

The previous prime is 16694544549653. The next prime is 16694544549691.

16694544549661 is nontrivially palindromic in base 10.

16694544549661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 16694544549661 - 2³ = 16694544549653 is a prime.

It is a super-3 number, since 3×16694544549661³ (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 (16694544549691) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44637819465 + ... + 44637819838.

It is an arithmetic number, because the mean of its divisors is an integer number (2410442261208).

Almost surely, 2^{16694544549661} is an apocalyptic number.

16694544549661 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

16694544549661 is a deficient number, since it is larger than the sum of its proper divisors (2588993540003).

16694544549661 is a wasteful number, since it uses less digits than its factorization.

16694544549661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89275639331.

The product of its digits is 671846400, while the sum is 70.

The spelling of 16694544549661 in words is "sixteen trillion, six hundred ninety-four billion, five hundred forty-four million, five hundred forty-nine thousand, six hundred sixty-one".