16021111606 has 4 divisors (see below), whose sum is σ = 24031667412. Its totient is φ = 8010555802.

The previous prime is 16021111597. The next prime is 16021111607. The reversal of 16021111606 is 60611112061.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16021111607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4005277900 + ... + 4005277903.

It is an arithmetic number, because the mean of its divisors is an integer number (6007916853).

Almost surely, 2^16021111606 is an apocalyptic number.

16021111606 is a deficient number, since it is larger than the sum of its proper divisors (8010555806).

16021111606 is an equidigital number, since it uses as much as digits as its factorization.

16021111606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8010555805.

The product of its (nonzero) digits is 432, while the sum is 25.

Adding to 16021111606 its reverse (60611112061), we get a palindrome (76632223667).

The spelling of 16021111606 in words is "sixteen billion, twenty-one million, one hundred eleven thousand, six hundred six".