13015136245 has 4 divisors (see below), whose sum is σ = 15618163500. Its totient is φ = 10412108992.

The previous prime is 13015136231. The next prime is 13015136263. The reversal of 13015136245 is 54263151031.

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

It can be written as a sum of positive squares in 2 ways, for example, as 4252865796 + 8762270449 = 65214^2 + 93607^2 .

It is a cyclic number.

It is not a de Polignac number, because 13015136245 - 2⁹ = 13015135733 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, 1301513620 + ... + 1301513629.

It is an arithmetic number, because the mean of its divisors is an integer number (3904540875).

Almost surely, 2^13015136245 is an apocalyptic number.

It is an amenable number.

13015136245 is a deficient number, since it is larger than the sum of its proper divisors (2603027255).

13015136245 is an equidigital number, since it uses as much as digits as its factorization.

13015136245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2603027254.

The product of its (nonzero) digits is 10800, while the sum is 31.

Adding to 13015136245 its reverse (54263151031), we get a palindrome (67278287276).

The spelling of 13015136245 in words is "thirteen billion, fifteen million, one hundred thirty-six thousand, two hundred forty-five".