13209642235 has 4 divisors (see below), whose sum is σ = 15851570688. Its totient is φ = 10567713784.

The previous prime is 13209642211. The next prime is 13209642239. The reversal of 13209642235 is 53224690231.

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

It is a cyclic number.

It is not a de Polignac number, because 13209642235 - 2¹¹ = 13209640187 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13209642194 and 13209642203.

It is not an unprimeable number, because it can be changed into a prime (13209642239) by changing a digit.

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, 1320964219 + ... + 1320964228.

It is an arithmetic number, because the mean of its divisors is an integer number (3962892672).

Almost surely, 2^13209642235 is an apocalyptic number.

13209642235 is a deficient number, since it is larger than the sum of its proper divisors (2641928453).

13209642235 is an equidigital number, since it uses as much as digits as its factorization.

13209642235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2641928452.

The product of its (nonzero) digits is 77760, while the sum is 37.

The spelling of 13209642235 in words is "thirteen billion, two hundred nine million, six hundred forty-two thousand, two hundred thirty-five".