16688740880237 has 4 divisors (see below), whose sum is σ = 16702320003420. Its totient is φ = 16675161757056.

The previous prime is 16688740880197. The next prime is 16688740880239. The reversal of 16688740880237 is 73208804788661.

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

It can be written as a sum of positive squares in 2 ways, for example, as 11522148236041 + 5166592644196 = 3394429^2 + 2273014^2 .

It is a cyclic number.

It is not a de Polignac number, because 16688740880237 - 2⁸ = 16688740879981 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 (16688740880239) 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, 6789559748 + ... + 6789562205.

It is an arithmetic number, because the mean of its divisors is an integer number (4175580000855).

Almost surely, 2^{16688740880237} is an apocalyptic number.

It is an amenable number.

16688740880237 is a deficient number, since it is larger than the sum of its proper divisors (13579123183).

16688740880237 is a wasteful number, since it uses less digits than its factorization.

16688740880237 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13579123182.

The product of its (nonzero) digits is 173408256, while the sum is 68.

The spelling of 16688740880237 in words is "sixteen trillion, six hundred eighty-eight billion, seven hundred forty million, eight hundred eighty thousand, two hundred thirty-seven".