11243635041409 has 3 divisors (see below), whose sum is σ = 11243638394563. Its totient is φ = 11243631688256.

The previous prime is 11243635041407. The next prime is 11243635041449. The reversal of 11243635041409 is 90414053634211.

The square root of 11243635041409 is 3353153.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 5791073796225 + 5452561245184 = 2406465^2 + 2335072^2 .

It is not a de Polignac number, because 11243635041409 - 2¹ = 11243635041407 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11243635041407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1676577 + ... + 5029729.

Almost surely, 2^{11243635041409} is an apocalyptic number.

11243635041409 is the 3353153-rd square number.

11243635041409 is the 1676577-th centered octagonal number.

It is an amenable number.

11243635041409 is a deficient number, since it is larger than the sum of its proper divisors (3353154).

11243635041409 is an frugal number, since it uses more digits than its factorization.

11243635041409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6706306 (or 3353153 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 43.

The spelling of 11243635041409 in words is "eleven trillion, two hundred forty-three billion, six hundred thirty-five million, forty-one thousand, four hundred nine".