16506053303 has 4 divisors (see below), whose sum is σ = 16508657808. Its totient is φ = 16503448800.

The previous prime is 16506053231. The next prime is 16506053309. The reversal of 16506053303 is 30335060561.

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 16506053303 - 2¹⁴ = 16506036919 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16506053303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16506053309) 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, 1292723 + ... + 1305428.

It is an arithmetic number, because the mean of its divisors is an integer number (4127164452).

Almost surely, 2^16506053303 is an apocalyptic number.

16506053303 is a deficient number, since it is larger than the sum of its proper divisors (2604505).

16506053303 is an equidigital number, since it uses as much as digits as its factorization.

16506053303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2604504.

The product of its (nonzero) digits is 24300, while the sum is 32.

The spelling of 16506053303 in words is "sixteen billion, five hundred six million, fifty-three thousand, three hundred three".