13246623505 has 4 divisors (see below), whose sum is σ = 15895948212. Its totient is φ = 10597298800.

The previous prime is 13246623463. The next prime is 13246623583. The reversal of 13246623505 is 50532664231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50532664231 = 7 ⋅7218952033.

It can be written as a sum of positive squares in 2 ways, for example, as 1395470736 + 11851152769 = 37356^2 + 108863^2 .

It is not a de Polignac number, because 13246623505 - 2¹⁵ = 13246590737 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1324662346 + ... + 1324662355.

It is an arithmetic number, because the mean of its divisors is an integer number (3973987053).

Almost surely, 2^13246623505 is an apocalyptic number.

It is an amenable number.

13246623505 is a deficient number, since it is larger than the sum of its proper divisors (2649324707).

13246623505 is an equidigital number, since it uses as much as digits as its factorization.

13246623505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2649324706.

The product of its (nonzero) digits is 129600, while the sum is 37.

The spelling of 13246623505 in words is "thirteen billion, two hundred forty-six million, six hundred twenty-three thousand, five hundred five".