13524523543 has 4 divisors (see below), whose sum is σ = 13960798528. Its totient is φ = 13088248560.

The previous prime is 13524523541. The next prime is 13524523591. The reversal of 13524523543 is 34532542531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34532542531 = 30529 ⋅1131139.

It is a cyclic number.

It is not a de Polignac number, because 13524523543 - 2¹ = 13524523541 is a prime.

It is a super-2 number, since 2×13524523543² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13524523541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 218137446 + ... + 218137507.

It is an arithmetic number, because the mean of its divisors is an integer number (3490199632).

Almost surely, 2^13524523543 is an apocalyptic number.

13524523543 is a deficient number, since it is larger than the sum of its proper divisors (436274985).

13524523543 is an equidigital number, since it uses as much as digits as its factorization.

13524523543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 436274984.

The product of its digits is 216000, while the sum is 37.

The spelling of 13524523543 in words is "thirteen billion, five hundred twenty-four million, five hundred twenty-three thousand, five hundred forty-three".