16684185009377 has 2 divisors, whose sum is σ = 16684185009378. Its totient is φ = 16684185009376.

The previous prime is 16684185009307. The next prime is 16684185009397. The reversal of 16684185009377 is 77390058148661.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16663777172641 + 20407836736 = 4082129^2 + 142856^2 .

It is an emirp because it is prime and its reverse (77390058148661) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16684185009377 - 2¹⁰ = 16684185008353 is a prime.

It is not a weakly prime, because it can be changed into another prime (16684185009307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8342092504688 + 8342092504689.

It is an arithmetic number, because the mean of its divisors is an integer number (8342092504689).

Almost surely, 2^{16684185009377} is an apocalyptic number.

It is an amenable number.

16684185009377 is a deficient number, since it is larger than the sum of its proper divisors (1).

16684185009377 is an equidigital number, since it uses as much as digits as its factorization.

16684185009377 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60963840, while the sum is 65.

The spelling of 16684185009377 in words is "sixteen trillion, six hundred eighty-four billion, one hundred eighty-five million, nine thousand, three hundred seventy-seven".