13243534124445 has 24 divisors (see below), whose sum is σ = 24305780276856. Its totient is φ = 6647734775808.

The previous prime is 13243534124357. The next prime is 13243534124467. The reversal of 13243534124445 is 54442143534231.

It is a happy number.

13243534124445 is a `hidden beast` number, since 1 + 3 + 24 + 3 + 5 + 341 + 244 + 45 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 2276058012921 + 10967476111524 = 1508661^2 + 3311718^2 .

It is not a de Polignac number, because 13243534124445 - 2¹¹ = 13243534122397 is a prime.

It is a super-2 number, since 2×13243534124445² (a number of 27 digits) contains 22 as substring.

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

It is a self number, because there is not a number n which added to its sum of digits gives 13243534124445.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8655903892 + ... + 8655905421.

It is an arithmetic number, because the mean of its divisors is an integer number (1012740844869).

Almost surely, 2^{13243534124445} is an apocalyptic number.

13243534124445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13243534124445 is a deficient number, since it is larger than the sum of its proper divisors (11062246152411).

13243534124445 is a wasteful number, since it uses less digits than its factorization.

13243534124445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17311809341 (or 17311809338 counting only the distinct ones).

The product of its digits is 2764800, while the sum is 45.

Adding to 13243534124445 its reverse (54442143534231), we get a palindrome (67685677658676).

The spelling of 13243534124445 in words is "thirteen trillion, two hundred forty-three billion, five hundred thirty-four million, one hundred twenty-four thousand, four hundred forty-five".