16365520066624 has 189 divisors, whose sum is σ = 34001132866407. Its totient is φ = 7815386262528.

The previous prime is 16365520066613. The next prime is 16365520066631. The reversal of 16365520066624 is 42666002556361.

The square root of 16365520066624 is 4045432.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 10597837506624 + 5767682560000 = 3255432^2 + 2401600^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 94598381802 + ... + 94598381974.

Almost surely, 2^{16365520066624} is an apocalyptic number.

16365520066624 is the 4045432-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16365520066624

16365520066624 is an abundant number, since it is smaller than the sum of its proper divisors (17635612799783).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16365520066624 is an frugal number, since it uses more digits than its factorization.

16365520066624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 590 (or 291 counting only the distinct ones).

The product of its (nonzero) digits is 9331200, while the sum is 52.

The spelling of 16365520066624 in words is "sixteen trillion, three hundred sixty-five billion, five hundred twenty million, sixty-six thousand, six hundred twenty-four".