16683411681 has 12 divisors (see below), whose sum is σ = 25366591120. Its totient is φ = 10536891480.

The previous prime is 16683411677. The next prime is 16683411691. The reversal of 16683411681 is 18611438661.

It is not a de Polignac number, because 16683411681 - 2² = 16683411677 is a prime.

It is a super-2 number, since 2×16683411681² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16683411691) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 48781735 + ... + 48782076.

Almost surely, 2^16683411681 is an apocalyptic number.

It is an amenable number.

16683411681 is a deficient number, since it is larger than the sum of its proper divisors (8683179439).

16683411681 is a wasteful number, since it uses less digits than its factorization.

16683411681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97563836 (or 97563833 counting only the distinct ones).

The product of its digits is 165888, while the sum is 45.

The spelling of 16683411681 in words is "sixteen billion, six hundred eighty-three million, four hundred eleven thousand, six hundred eighty-one".