13124053505 has 4 divisors (see below), whose sum is σ = 15748864212. Its totient is φ = 10499242800.

The previous prime is 13124053493. The next prime is 13124053531. The reversal of 13124053505 is 50535042131.

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 1890597361 + 11233456144 = 43481^2 + 105988^2 .

It is not a de Polignac number, because 13124053505 - 2⁶ = 13124053441 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1312405346 + ... + 1312405355.

It is an arithmetic number, because the mean of its divisors is an integer number (3937216053).

Almost surely, 2^13124053505 is an apocalyptic number.

It is an amenable number.

13124053505 is a deficient number, since it is larger than the sum of its proper divisors (2624810707).

13124053505 is an equidigital number, since it uses as much as digits as its factorization.

13124053505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2624810706.

The product of its (nonzero) digits is 9000, while the sum is 29.

Adding to 13124053505 its reverse (50535042131), we get a palindrome (63659095636).

The spelling of 13124053505 in words is "thirteen billion, one hundred twenty-four million, fifty-three thousand, five hundred five".