11285924459209 has 9 divisors (see below), whose sum is σ = 11474180994549. Its totient is φ = 11100707736960.

The previous prime is 11285924459207. The next prime is 11285924459263. The reversal of 11285924459209 is 90295442958211.

The square root of 11285924459209 is 3359453.

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

It can be written as a sum of positive squares in 4 ways, for example, as 37762205625 + 11248162253584 = 194325^2 + 3353828^2 .

It is not a de Polignac number, because 11285924459209 - 2¹ = 11285924459207 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (61).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11285924459203) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 204899097 + ... + 204954169.

Almost surely, 2^{11285924459209} is an apocalyptic number.

11285924459209 is the 3359453-rd square number.

11285924459209 is the 1679727-th centered octagonal number.

It is an amenable number.

11285924459209 is a deficient number, since it is larger than the sum of its proper divisors (188256535340).

11285924459209 is an frugal number, since it uses more digits than its factorization.

11285924459209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110268 (or 55134 counting only the distinct ones).

The product of its (nonzero) digits is 18662400, while the sum is 61.

The spelling of 11285924459209 in words is "eleven trillion, two hundred eighty-five billion, nine hundred twenty-four million, four hundred fifty-nine thousand, two hundred nine".