16309194704449 has 2 divisors, whose sum is σ = 16309194704450. Its totient is φ = 16309194704448.

The previous prime is 16309194704437. The next prime is 16309194704513. The reversal of 16309194704449 is 94440749190361.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15047688348225 + 1261506356224 = 3879135^2 + 1123168^2 .

It is a cyclic number.

It is not a de Polignac number, because 16309194704449 - 2⁹ = 16309194703937 is a prime.

It is not a weakly prime, because it can be changed into another prime (16309195704449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8154597352224 + 8154597352225.

It is an arithmetic number, because the mean of its divisors is an integer number (8154597352225).

Almost surely, 2^{16309194704449} is an apocalyptic number.

It is an amenable number.

16309194704449 is a deficient number, since it is larger than the sum of its proper divisors (1).

16309194704449 is an equidigital number, since it uses as much as digits as its factorization.

16309194704449 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23514624, while the sum is 61.

The spelling of 16309194704449 in words is "sixteen trillion, three hundred nine billion, one hundred ninety-four million, seven hundred four thousand, four hundred forty-nine".