16221463461503 has 2 divisors, whose sum is σ = 16221463461504. Its totient is φ = 16221463461502.

The previous prime is 16221463461487. The next prime is 16221463461557. The reversal of 16221463461503 is 30516436412261.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16221463461503 - 2⁴ = 16221463461487 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16221463401503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8110731730751 + 8110731730752.

It is an arithmetic number, because the mean of its divisors is an integer number (8110731730752).

Almost surely, 2^{16221463461503} is an apocalyptic number.

16221463461503 is a deficient number, since it is larger than the sum of its proper divisors (1).

16221463461503 is an equidigital number, since it uses as much as digits as its factorization.

16221463461503 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 622080, while the sum is 44.

Adding to 16221463461503 its reverse (30516436412261), we get a palindrome (46737899873764).

The spelling of 16221463461503 in words is "sixteen trillion, two hundred twenty-one billion, four hundred sixty-three million, four hundred sixty-one thousand, five hundred three".