11229284565 has 12 divisors (see below), whose sum is σ = 19464093324. Its totient is φ = 5988951744.

The previous prime is 11229284543. The next prime is 11229284569. The reversal of 11229284565 is 56548292211.

11229284565 is a `hidden beast` number, since 1 + 1 + 2 + 2 + 9 + 2 + 84 + 565 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 5322286116 + 5906998449 = 72954^2 + 76857^2 .

It is not a de Polignac number, because 11229284565 - 2¹⁸ = 11229022421 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 249539657 = 11229284565 / (1 + 1 + 2 + 2 + 9 + 2 + 8 + 4 + 5 + 6 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 11229284565.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11229284569) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 124769784 + ... + 124769873.

It is an arithmetic number, because the mean of its divisors is an integer number (1622007777).

Almost surely, 2^11229284565 is an apocalyptic number.

11229284565 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11229284565 is a deficient number, since it is larger than the sum of its proper divisors (8234808759).

11229284565 is a wasteful number, since it uses less digits than its factorization.

11229284565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249539668 (or 249539665 counting only the distinct ones).

The product of its digits is 345600, while the sum is 45.

The spelling of 11229284565 in words is "eleven billion, two hundred twenty-nine million, two hundred eighty-four thousand, five hundred sixty-five".