16363666535653 has 16 divisors (see below), whose sum is σ = 16877484734832. Its totient is φ = 15858198720000.

The previous prime is 16363666535639. The next prime is 16363666535701. The reversal of 16363666535653 is 35653566636361.

It can be written as a sum of positive squares in 8 ways, for example, as 2364342920164 + 13999323615489 = 1537642^2 + 3741567^2 .

It is a cyclic number.

It is not a de Polignac number, because 16363666535653 - 2⁵ = 16363666535621 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 (16363666505653) 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, 1376928 + ... + 5884153.

It is an arithmetic number, because the mean of its divisors is an integer number (1054842795927).

Almost surely, 2^{16363666535653} is an apocalyptic number.

It is an amenable number.

16363666535653 is a deficient number, since it is larger than the sum of its proper divisors (513818199179).

16363666535653 is a wasteful number, since it uses less digits than its factorization.

16363666535653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7261656.

The product of its digits is 472392000, while the sum is 64.

The spelling of 16363666535653 in words is "sixteen trillion, three hundred sixty-three billion, six hundred sixty-six million, five hundred thirty-five thousand, six hundred fifty-three".