11400243444321 has 16 divisors (see below), whose sum is σ = 16051461003840. Its totient is φ = 7177150056960.

The previous prime is 11400243444311. The next prime is 11400243444347. The reversal of 11400243444321 is 12344434200411.

It is a happy number.

It is not a de Polignac number, because 11400243444321 - 2⁷ = 11400243444193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11400243444311) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 319477800 + ... + 319513481.

It is an arithmetic number, because the mean of its divisors is an integer number (1003216312740).

Almost surely, 2^{11400243444321} is an apocalyptic number.

It is an amenable number.

11400243444321 is a deficient number, since it is larger than the sum of its proper divisors (4651217559519).

11400243444321 is a wasteful number, since it uses less digits than its factorization.

11400243444321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 638991616.

The product of its (nonzero) digits is 36864, while the sum is 33.

Adding to 11400243444321 its reverse (12344434200411), we get a palindrome (23744677644732).

The spelling of 11400243444321 in words is "eleven trillion, four hundred billion, two hundred forty-three million, four hundred forty-four thousand, three hundred twenty-one".