11144400521 has 8 divisors (see below), whose sum is σ = 11518804224. Its totient is φ = 10770928560.

The previous prime is 11144400511. The next prime is 11144400529. The reversal of 11144400521 is 12500444111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11144400521 - 2¹⁸ = 11144138377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11144400529) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 208571 + ... + 256496.

It is an arithmetic number, because the mean of its divisors is an integer number (1439850528).

Almost surely, 2^11144400521 is an apocalyptic number.

It is an amenable number.

11144400521 is a deficient number, since it is larger than the sum of its proper divisors (374403703).

11144400521 is an equidigital number, since it uses as much as digits as its factorization.

11144400521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 465871.

The product of its (nonzero) digits is 640, while the sum is 23.

Adding to 11144400521 its reverse (12500444111), we get a palindrome (23644844632).

The spelling of 11144400521 in words is "eleven billion, one hundred forty-four million, four hundred thousand, five hundred twenty-one".