13125445121115 has 24 divisors (see below), whose sum is σ = 23739935525280. Its totient is φ = 6695879249664.

The previous prime is 13125445121093. The next prime is 13125445121119. The reversal of 13125445121115 is 51112154452131.

It is a happy number.

13125445121115 is a `hidden beast` number, since 1 + 3 + 1 + 25 + 4 + 4 + 512 + 1 + 115 = 666.

It is not a de Polignac number, because 13125445121115 - 2⁶ = 13125445121051 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13125445121115.

It is not an unprimeable number, because it can be changed into a prime (13125445121119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6340793710 + ... + 6340795779.

It is an arithmetic number, because the mean of its divisors is an integer number (989163980220).

Almost surely, 2^{13125445121115} is an apocalyptic number.

13125445121115 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

13125445121115 is a deficient number, since it is larger than the sum of its proper divisors (10614490404165).

13125445121115 is a wasteful number, since it uses less digits than its factorization.

13125445121115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12681589523 (or 12681589520 counting only the distinct ones).

The product of its digits is 24000, while the sum is 36.

Adding to 13125445121115 its reverse (51112154452131), we get a palindrome (64237599573246).

The spelling of 13125445121115 in words is "thirteen trillion, one hundred twenty-five billion, four hundred forty-five million, one hundred twenty-one thousand, one hundred fifteen".