8650380969409 has 15 divisors (see below), whose sum is σ = 9191926512687. Its totient is φ = 8140735036416.

The previous prime is 8650380969397. The next prime is 8650380969421. The reversal of 8650380969409 is 9049690830568.

The square root of 8650380969409 is 2941153.

It is a perfect power (a square), and thus also a powerful number.

It is an interprime number because it is at equal distance from previous prime (8650380969397) and next prime (8650380969421).

It can be written as a sum of positive squares in 7 ways, for example, as 9885330625 + 8640495638784 = 99425^2 + 2939472^2 .

It is not a de Polignac number, because 8650380969409 - 2⁷ = 8650380969281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8650380969449) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 849988129 + ... + 849998305.

Almost surely, 2^{8650380969409} is an apocalyptic number.

8650380969409 is the 2941153-rd square number.

8650380969409 is the 1470577-th centered octagonal number.

It is an amenable number.

8650380969409 is a deficient number, since it is larger than the sum of its proper divisors (541545543278).

8650380969409 is an frugal number, since it uses more digits than its factorization.

8650380969409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20422 (or 10194 counting only the distinct ones).

The product of its (nonzero) digits is 100776960, while the sum is 67.

The spelling of 8650380969409 in words is "eight trillion, six hundred fifty billion, three hundred eighty million, nine hundred sixty-nine thousand, four hundred nine".