216445335205411 has 16 divisors (see below), whose sum is σ = 233469797626240. Its totient is φ = 199474551400320.

The previous prime is 216445335205303. The next prime is 216445335205433. The reversal of 216445335205411 is 114502533544612.

It is a happy number.

216445335205411 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 216445335205411 - 2⁷ = 216445335205283 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (216445335203411) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36411085 + ... + 41936353.

It is an arithmetic number, because the mean of its divisors is an integer number (14591862351640).

Almost surely, 2^{216445335205411} is an apocalyptic number.

216445335205411 is a deficient number, since it is larger than the sum of its proper divisors (17024462420829).

216445335205411 is a wasteful number, since it uses less digits than its factorization.

216445335205411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5530126.

The product of its (nonzero) digits is 1728000, while the sum is 46.

The spelling of 216445335205411 in words is "two hundred sixteen trillion, four hundred forty-five billion, three hundred thirty-five million, two hundred five thousand, four hundred eleven".