16446064477 has 2 divisors, whose sum is σ = 16446064478. Its totient is φ = 16446064476.

The previous prime is 16446064451. The next prime is 16446064489. The reversal of 16446064477 is 77446064461.

16446064477 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15873228121 + 572836356 = 125989^2 + 23934^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16446064477 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16446064477.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16446064447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8223032238 + 8223032239.

It is an arithmetic number, because the mean of its divisors is an integer number (8223032239).

Almost surely, 2^16446064477 is an apocalyptic number.

It is an amenable number.

16446064477 is a deficient number, since it is larger than the sum of its proper divisors (1).

16446064477 is an equidigital number, since it uses as much as digits as its factorization.

16446064477 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2709504, while the sum is 49.

The spelling of 16446064477 in words is "sixteen billion, four hundred forty-six million, sixty-four thousand, four hundred seventy-seven".