16684387514 has 4 divisors (see below), whose sum is σ = 25026581274. Its totient is φ = 8342193756.

The previous prime is 16684387513. The next prime is 16684387529. The reversal of 16684387514 is 41578348661.

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

It can be written as a sum of positive squares in only one way, i.e., 13861059289 + 2823328225 = 117733^2 + 53135^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (16684387513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4171096877 + ... + 4171096880.

Almost surely, 2^16684387514 is an apocalyptic number.

16684387514 is a deficient number, since it is larger than the sum of its proper divisors (8342193760).

16684387514 is an equidigital number, since it uses as much as digits as its factorization.

16684387514 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8342193759.

The product of its digits is 3870720, while the sum is 53.

The spelling of 16684387514 in words is "sixteen billion, six hundred eighty-four million, three hundred eighty-seven thousand, five hundred fourteen".