16326563263 has 4 divisors (see below), whose sum is σ = 16330039488. Its totient is φ = 16323087040.

The previous prime is 16326563243. The next prime is 16326563273. The reversal of 16326563263 is 36236562361.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36236562361 = 22853 ⋅1585637.

It is a cyclic number.

It is not a de Polignac number, because 16326563263 - 2⁹ = 16326562751 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 (16326563213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1731058 + ... + 1740463.

It is an arithmetic number, because the mean of its divisors is an integer number (4082509872).

Almost surely, 2^16326563263 is an apocalyptic number.

16326563263 is a deficient number, since it is larger than the sum of its proper divisors (3476225).

16326563263 is an equidigital number, since it uses as much as digits as its factorization.

16326563263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3476224.

The product of its digits is 699840, while the sum is 43.

The spelling of 16326563263 in words is "sixteen billion, three hundred twenty-six million, five hundred sixty-three thousand, two hundred sixty-three".