13275263506 has 4 divisors (see below), whose sum is σ = 19912895262. Its totient is φ = 6637631752.

The previous prime is 13275263497. The next prime is 13275263509. The reversal of 13275263506 is 60536257231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 60536257231 = 47 ⋅1288005473.

It can be written as a sum of positive squares in only one way, i.e., 11044118281 + 2231145225 = 105091^2 + 47235^2 .

It is not an unprimeable number, because it can be changed into a prime (13275263509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3318815875 + ... + 3318815878.

Almost surely, 2^13275263506 is an apocalyptic number.

13275263506 is a deficient number, since it is larger than the sum of its proper divisors (6637631756).

13275263506 is an equidigital number, since it uses as much as digits as its factorization.

13275263506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6637631755.

The product of its (nonzero) digits is 226800, while the sum is 40.

The spelling of 13275263506 in words is "thirteen billion, two hundred seventy-five million, two hundred sixty-three thousand, five hundred six".