16011 has 8 divisors (see below), whose sum is σ = 23760.
Its totient is φ = 10656.
The previous prime is 16007. The next prime is 16033. The reversal of 16011 is 11061.
It is not a de Polignac number, because 16011 - 22 = 16007 is a prime.
It is a Harshad number since it is a multiple of its sum of digits (9).
It is a junction number, because it is equal to n+sod(n) for n = 15984 and 16002.
It is not an unprimeable number, because it can be changed into a prime (16001) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 270 + ... + 323.
It is an arithmetic number, because the mean of its divisors is an integer number (2970).
216011 is an apocalyptic number.
16011 is a deficient number, since it is larger than the sum of its proper divisors (7749).
16011 is an equidigital number, since it uses as much as digits as its factorization.
16011 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 602 (or 596 counting only the distinct ones).
The product of its (nonzero) digits is 6, while the sum is 9.
The square root of 16011 is about 126.5345802538.
The cubic root of 16011 is about 25.2041943132.
Adding to 16011 its reverse (11061), we get a palindrome (27072).
Subtracting from 16011 its reverse (11061), we obtain a triangular number (4950 = T99).
It can be divided in two parts, 160 and 11, that added together give a palindrome (171).
The spelling of 16011 in words is "sixteen thousand, eleven".