16866387713 has 16 divisors (see below), whose sum is σ = 19905414144. Its totient is φ = 13985110080.

The previous prime is 16866387691. The next prime is 16866387721. The reversal of 16866387713 is 31778366861.

It is a cyclic number.

It is not a de Polignac number, because 16866387713 - 2¹² = 16866383617 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16866387763) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 601931 + ... + 629327.

It is an arithmetic number, because the mean of its divisors is an integer number (1244088384).

Almost surely, 2^16866387713 is an apocalyptic number.

It is an amenable number.

16866387713 is a deficient number, since it is larger than the sum of its proper divisors (3039026431).

16866387713 is a wasteful number, since it uses less digits than its factorization.

16866387713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30272.

The product of its digits is 6096384, while the sum is 56.

The spelling of 16866387713 in words is "sixteen billion, eight hundred sixty-six million, three hundred eighty-seven thousand, seven hundred thirteen".