13136215445 has 4 divisors (see below), whose sum is σ = 15763458540. Its totient is φ = 10508972352.

The previous prime is 13136215429. The next prime is 13136215451. The reversal of 13136215445 is 54451263131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54451263131 = 149 ⋅365444719.

It can be written as a sum of positive squares in 2 ways, for example, as 1780755601 + 11355459844 = 42199^2 + 106562^2 .

It is a cyclic number.

It is not a de Polignac number, because 13136215445 - 2⁴ = 13136215429 is a prime.

It is a congruent 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, 1313621540 + ... + 1313621549.

It is an arithmetic number, because the mean of its divisors is an integer number (3940864635).

Almost surely, 2^13136215445 is an apocalyptic number.

It is an amenable number.

13136215445 is a deficient number, since it is larger than the sum of its proper divisors (2627243095).

13136215445 is an equidigital number, since it uses as much as digits as its factorization.

13136215445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2627243094.

The product of its digits is 43200, while the sum is 35.

Adding to 13136215445 its reverse (54451263131), we get a palindrome (67587478576).

The spelling of 13136215445 in words is "thirteen billion, one hundred thirty-six million, two hundred fifteen thousand, four hundred forty-five".