16446313447 has 2 divisors, whose sum is σ = 16446313448. Its totient is φ = 16446313446.

The previous prime is 16446313441. The next prime is 16446313463. The reversal of 16446313447 is 74431364461.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16446313447 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16446313441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8223156723 + 8223156724.

It is an arithmetic number, because the mean of its divisors is an integer number (8223156724).

Almost surely, 2^16446313447 is an apocalyptic number.

16446313447 is a deficient number, since it is larger than the sum of its proper divisors (1).

16446313447 is an equidigital number, since it uses as much as digits as its factorization.

16446313447 is an evil number, because the sum of its binary digits is even.

The product of its digits is 580608, while the sum is 43.

The spelling of 16446313447 in words is "sixteen billion, four hundred forty-six million, three hundred thirteen thousand, four hundred forty-seven".