16216474021 has 8 divisors (see below), whose sum is σ = 17692985088. Its totient is φ = 14740344000.

The previous prime is 16216474009. The next prime is 16216474031. The reversal of 16216474021 is 12047461261.

16216474021 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 16216474021 - 2⁹ = 16216473509 is a prime.

It is a super-3 number, since 3×16216474021³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16216474031) 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, 2325 + ... + 180106.

It is an arithmetic number, because the mean of its divisors is an integer number (2211623136).

Almost surely, 2^16216474021 is an apocalyptic number.

16216474021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

16216474021 is a deficient number, since it is larger than the sum of its proper divisors (1476511067).

16216474021 is a wasteful number, since it uses less digits than its factorization.

16216474021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190523.

The product of its (nonzero) digits is 16128, while the sum is 34.

The spelling of 16216474021 in words is "sixteen billion, two hundred sixteen million, four hundred seventy-four thousand, twenty-one".