16650242369 has 2 divisors, whose sum is σ = 16650242370. Its totient is φ = 16650242368.

The previous prime is 16650242339. The next prime is 16650242467. The reversal of 16650242369 is 96324205661.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16515334144 + 134908225 = 128512^2 + 11615^2 .

It is a cyclic number.

It is not a de Polignac number, because 16650242369 - 2⁸ = 16650242113 is a prime.

It is a super-2 number, since 2×16650242369² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (16650242339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8325121184 + 8325121185.

It is an arithmetic number, because the mean of its divisors is an integer number (8325121185).

Almost surely, 2^16650242369 is an apocalyptic number.

It is an amenable number.

16650242369 is a deficient number, since it is larger than the sum of its proper divisors (1).

16650242369 is an equidigital number, since it uses as much as digits as its factorization.

16650242369 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 466560, while the sum is 44.

The spelling of 16650242369 in words is "sixteen billion, six hundred fifty million, two hundred forty-two thousand, three hundred sixty-nine".