16012421209 has 8 divisors (see below), whose sum is σ = 16942516640. Its totient is φ = 15091059456.

The previous prime is 16012421207. The next prime is 16012421231. The reversal of 16012421209 is 90212421061.

16012421209 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16012421209 - 2¹ = 16012421207 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16012421203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2179647 + ... + 2186980.

It is an arithmetic number, because the mean of its divisors is an integer number (2117814580).

Almost surely, 2^16012421209 is an apocalyptic number.

16012421209 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

16012421209 is a deficient number, since it is larger than the sum of its proper divisors (930095431).

16012421209 is a wasteful number, since it uses less digits than its factorization.

16012421209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4366839.

The product of its (nonzero) digits is 1728, while the sum is 28.

The spelling of 16012421209 in words is "sixteen billion, twelve million, four hundred twenty-one thousand, two hundred nine".