16016353335421 has 24 divisors (see below), whose sum is σ = 16686096152544. Its totient is φ = 15372528642240.

The previous prime is 16016353335419. The next prime is 16016353335443. The reversal of 16016353335421 is 12453335361061.

It is not a de Polignac number, because 16016353335421 - 2¹ = 16016353335419 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16016353335491) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 126126066 + ... + 126252988.

It is an arithmetic number, because the mean of its divisors is an integer number (695254006356).

Almost surely, 2^{16016353335421} is an apocalyptic number.

It is an amenable number.

16016353335421 is a deficient number, since it is larger than the sum of its proper divisors (669742817123).

16016353335421 is a wasteful number, since it uses less digits than its factorization.

16016353335421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127869 (or 127840 counting only the distinct ones).

The product of its (nonzero) digits is 583200, while the sum is 43.

Adding to 16016353335421 its reverse (12453335361061), we get a palindrome (28469688696482).

The spelling of 16016353335421 in words is "sixteen trillion, sixteen billion, three hundred fifty-three million, three hundred thirty-five thousand, four hundred twenty-one".