11538171363015 has 96 divisors (see below), whose sum is σ = 22582547807040. Its totient is φ = 5398348032000.

The previous prime is 11538171363013. The next prime is 11538171363041. The reversal of 11538171363015 is 51036317183511.

11538171363015 is a `hidden beast` number, since 1 + 1 + 5 + 3 + 8 + 1 + 7 + 1 + 3 + 630 + 1 + 5 = 666.

It is not a de Polignac number, because 11538171363015 - 2¹ = 11538171363013 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11538171363013) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 25630209 + ... + 26076501.

It is an arithmetic number, because the mean of its divisors is an integer number (235234872990).

Almost surely, 2^{11538171363015} is an apocalyptic number.

11538171363015 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

11538171363015 is a deficient number, since it is larger than the sum of its proper divisors (11044376444025).

11538171363015 is a wasteful number, since it uses less digits than its factorization.

11538171363015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 448145 (or 448142 counting only the distinct ones).

The product of its (nonzero) digits is 226800, while the sum is 45.

The spelling of 11538171363015 in words is "eleven trillion, five hundred thirty-eight billion, one hundred seventy-one million, three hundred sixty-three thousand, fifteen".