16661314333616 has 20 divisors (see below), whose sum is σ = 32281415946432. Its totient is φ = 8330626347456.

The previous prime is 16661314333589. The next prime is 16661314333619. The reversal of 16661314333616 is 61633341316661.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (16661314333619) 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, 2900321 + ... + 6460223.

Almost surely, 2^{16661314333616} is an apocalyptic number.

16661314333616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

16661314333616 is a deficient number, since it is larger than the sum of its proper divisors (15620101612816).

16661314333616 is a wasteful number, since it uses less digits than its factorization.

16661314333616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3852428 (or 3852422 counting only the distinct ones).

The product of its digits is 2519424, while the sum is 50.

The spelling of 16661314333616 in words is "sixteen trillion, six hundred sixty-one billion, three hundred fourteen million, three hundred thirty-three thousand, six hundred sixteen".