12440532205 has 4 divisors (see below), whose sum is σ = 14928638652. Its totient is φ = 9952425760.

The previous prime is 12440532199. The next prime is 12440532217. The reversal of 12440532205 is 50223504421.

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 2510210404 + 9930321801 = 50102^2 + 99651^2 .

It is not a de Polignac number, because 12440532205 - 2¹⁵ = 12440499437 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1244053216 + ... + 1244053225.

It is an arithmetic number, because the mean of its divisors is an integer number (3732159663).

Almost surely, 2^12440532205 is an apocalyptic number.

It is an amenable number.

12440532205 is a deficient number, since it is larger than the sum of its proper divisors (2488106447).

12440532205 is an equidigital number, since it uses as much as digits as its factorization.

12440532205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2488106446.

The product of its (nonzero) digits is 9600, while the sum is 28.

The spelling of 12440532205 in words is "twelve billion, four hundred forty million, five hundred thirty-two thousand, two hundred five".