11524421043505 has 4 divisors (see below), whose sum is σ = 13829305252212. Its totient is φ = 9219536834800.

The previous prime is 11524421043503. The next prime is 11524421043529. The reversal of 11524421043505 is 50534012442511.

11524421043505 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9029057415921 + 2495363627584 = 3004839^2 + 1579672^2 .

It is not a de Polignac number, because 11524421043505 - 2¹ = 11524421043503 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11524421043503) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1152442104346 + ... + 1152442104355.

It is an arithmetic number, because the mean of its divisors is an integer number (3457326313053).

Almost surely, 2^{11524421043505} is an apocalyptic number.

It is an amenable number.

11524421043505 is a deficient number, since it is larger than the sum of its proper divisors (2304884208707).

11524421043505 is an equidigital number, since it uses as much as digits as its factorization.

11524421043505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2304884208706.

The product of its (nonzero) digits is 96000, while the sum is 37.

The spelling of 11524421043505 in words is "eleven trillion, five hundred twenty-four billion, four hundred twenty-one million, forty-three thousand, five hundred five".