16683520016687 has 4 divisors (see below), whose sum is σ = 16705443171216. Its totient is φ = 16661596862160.

The previous prime is 16683520016677. The next prime is 16683520016699. The reversal of 16683520016687 is 78661002538661.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 16683520016687 - 2¹² = 16683520012591 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16683520016617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10961576123 + ... + 10961577644.

It is an arithmetic number, because the mean of its divisors is an integer number (4176360792804).

Almost surely, 2^{16683520016687} is an apocalyptic number.

16683520016687 is a deficient number, since it is larger than the sum of its proper divisors (21923154529).

16683520016687 is an equidigital number, since it uses as much as digits as its factorization.

16683520016687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21923154528.

The product of its (nonzero) digits is 17418240, while the sum is 59.

The spelling of 16683520016687 in words is "sixteen trillion, six hundred eighty-three billion, five hundred twenty million, sixteen thousand, six hundred eighty-seven".