11321242205438 has 16 divisors (see below), whose sum is σ = 18527579866224. Its totient is φ = 5145488405760.

The previous prime is 11321242205437. The next prime is 11321242205443. The reversal of 11321242205438 is 83450224212311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11321242205437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26320745 + ... + 26747412.

It is an arithmetic number, because the mean of its divisors is an integer number (1157973741639).

Almost surely, 2^{11321242205438} is an apocalyptic number.

11321242205438 is a deficient number, since it is larger than the sum of its proper divisors (7206337660786).

11321242205438 is a wasteful number, since it uses less digits than its factorization.

11321242205438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53077867.

The product of its (nonzero) digits is 92160, while the sum is 38.

Adding to 11321242205438 its reverse (83450224212311), we get a palindrome (94771466417749).

The spelling of 11321242205438 in words is "eleven trillion, three hundred twenty-one billion, two hundred forty-two million, two hundred five thousand, four hundred thirty-eight".