16221473803 has 2 divisors, whose sum is σ = 16221473804. Its totient is φ = 16221473802.

The previous prime is 16221473789. The next prime is 16221473857. The reversal of 16221473803 is 30837412261.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16221473803 - 2⁵ = 16221473771 is a prime.

It is not a weakly prime, because it can be changed into another prime (16221473893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8110736901 + 8110736902.

It is an arithmetic number, because the mean of its divisors is an integer number (8110736902).

Almost surely, 2^16221473803 is an apocalyptic number.

16221473803 is a deficient number, since it is larger than the sum of its proper divisors (1).

16221473803 is an equidigital number, since it uses as much as digits as its factorization.

16221473803 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48384, while the sum is 37.

The spelling of 16221473803 in words is "sixteen billion, two hundred twenty-one million, four hundred seventy-three thousand, eight hundred three".