12144452453523 has 24 divisors (see below), whose sum is σ = 19352135624640. Its totient is φ = 7291228487040.

The previous prime is 12144452453503. The next prime is 12144452453579. The reversal of 12144452453523 is 32535425444121.

12144452453523 is a `hidden beast` number, since 1 + 2 + 1 + 4 + 44 + 52 + 4 + 535 + 23 = 666.

It is not a de Polignac number, because 12144452453523 - 2⁵ = 12144452453491 is a prime.

It is a super-2 number, since 2×12144452453523² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12144452453503) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1265833483 + ... + 1265843076.

It is an arithmetic number, because the mean of its divisors is an integer number (806338984360).

Almost surely, 2^{12144452453523} is an apocalyptic number.

12144452453523 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

12144452453523 is a deficient number, since it is larger than the sum of its proper divisors (7207683171117).

12144452453523 is a wasteful number, since it uses less digits than its factorization.

12144452453523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2531676619 (or 2531676616 counting only the distinct ones).

The product of its digits is 2304000, while the sum is 45.

Adding to 12144452453523 its reverse (32535425444121), we get a palindrome (44679877897644).

The spelling of 12144452453523 in words is "twelve trillion, one hundred forty-four billion, four hundred fifty-two million, four hundred fifty-three thousand, five hundred twenty-three".