13506205051 has 4 divisors (see below), whose sum is σ = 13554964192. Its totient is φ = 13457445912.

The previous prime is 13506205001. The next prime is 13506205109. The reversal of 13506205051 is 15050260531.

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 13506205051 - 2¹⁵ = 13506172283 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13506205001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24379155 + ... + 24379708.

It is an arithmetic number, because the mean of its divisors is an integer number (3388741048).

Almost surely, 2^13506205051 is an apocalyptic number.

13506205051 is a deficient number, since it is larger than the sum of its proper divisors (48759141).

13506205051 is an equidigital number, since it uses as much as digits as its factorization.

13506205051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48759140.

The product of its (nonzero) digits is 4500, while the sum is 28.

Adding to 13506205051 its reverse (15050260531), we get a palindrome (28556465582).

The spelling of 13506205051 in words is "thirteen billion, five hundred six million, two hundred five thousand, fifty-one".