13011505138365 has 16 divisors (see below), whose sum is σ = 20823976219200. Its totient is φ = 6937613407872.

The previous prime is 13011505138363. The next prime is 13011505138381. The reversal of 13011505138365 is 56383150511031.

It is not a de Polignac number, because 13011505138365 - 2¹ = 13011505138363 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13011505138363) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 115942000 + ... + 116054169.

It is an arithmetic number, because the mean of its divisors is an integer number (1301498513700).

Almost surely, 2^{13011505138365} is an apocalyptic number.

13011505138365 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13011505138365 is a deficient number, since it is larger than the sum of its proper divisors (7812471080835).

13011505138365 is a wasteful number, since it uses less digits than its factorization.

13011505138365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231999916.

The product of its (nonzero) digits is 162000, while the sum is 42.

Adding to 13011505138365 its reverse (56383150511031), we get a palindrome (69394655649396).

The spelling of 13011505138365 in words is "thirteen trillion, eleven billion, five hundred five million, one hundred thirty-eight thousand, three hundred sixty-five".