16246442005621 has 16 divisors (see below), whose sum is σ = 16830030818304. Its totient is φ = 15673041869184.

The previous prime is 16246442005597. The next prime is 16246442005663. The reversal of 16246442005621 is 12650024464261.

It is a cyclic number.

It is not a de Polignac number, because 16246442005621 - 2¹⁷ = 16246441874549 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 (16246442705621) 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, 3935635 + ... + 6926911.

It is an arithmetic number, because the mean of its divisors is an integer number (1051876926144).

Almost surely, 2^{16246442005621} is an apocalyptic number.

It is an amenable number.

16246442005621 is a deficient number, since it is larger than the sum of its proper divisors (583588812683).

16246442005621 is a wasteful number, since it uses less digits than its factorization.

16246442005621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2992980.

The product of its (nonzero) digits is 552960, while the sum is 43.

Adding to 16246442005621 its reverse (12650024464261), we get a palindrome (28896466469882).

The spelling of 16246442005621 in words is "sixteen trillion, two hundred forty-six billion, four hundred forty-two million, five thousand, six hundred twenty-one".