16428821303 has 4 divisors (see below), whose sum is σ = 16496990928. Its totient is φ = 16360651680.

The previous prime is 16428821281. The next prime is 16428821323. The reversal of 16428821303 is 30312882461.

It is a happy number.

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 16428821303 - 2⁶ = 16428821239 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 (16428821323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34084451 + ... + 34084932.

It is an arithmetic number, because the mean of its divisors is an integer number (4124247732).

Almost surely, 2^16428821303 is an apocalyptic number.

16428821303 is a deficient number, since it is larger than the sum of its proper divisors (68169625).

16428821303 is an equidigital number, since it uses as much as digits as its factorization.

16428821303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68169624.

The product of its (nonzero) digits is 55296, while the sum is 38.

The spelling of 16428821303 in words is "sixteen billion, four hundred twenty-eight million, eight hundred twenty-one thousand, three hundred three".