16513750663 has 4 divisors (see below), whose sum is σ = 16517203720. Its totient is φ = 16510297608.

The previous prime is 16513750639. The next prime is 16513750679. The reversal of 16513750663 is 36605731561.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 16513750663 - 2¹³ = 16513742471 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 (16513730663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1719345 + ... + 1728922.

It is an arithmetic number, because the mean of its divisors is an integer number (4129300930).

Almost surely, 2^16513750663 is an apocalyptic number.

16513750663 is a deficient number, since it is larger than the sum of its proper divisors (3453057).

16513750663 is an equidigital number, since it uses as much as digits as its factorization.

16513750663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3453056.

The product of its (nonzero) digits is 340200, while the sum is 43.

The spelling of 16513750663 in words is "sixteen billion, five hundred thirteen million, seven hundred fifty thousand, six hundred sixty-three".