13523453208 has 96 divisors (see below), whose sum is σ = 37226030400. Its totient is φ = 4434393600.

The previous prime is 13523453197. The next prime is 13523453227. The reversal of 13523453208 is 80235432531.

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 1594098 + ... + 1602558.

It is an arithmetic number, because the mean of its divisors is an integer number (387771150).

Almost surely, 2^13523453208 is an apocalyptic number.

13523453208 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13523453208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18613015200).

13523453208 is an abundant number, since it is smaller than the sum of its proper divisors (23702577192).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13523453208 is a wasteful number, since it uses less digits than its factorization.

13523453208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8833 (or 8826 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

Adding to 13523453208 its reverse (80235432531), we get a palindrome (93758885739).

The spelling of 13523453208 in words is "thirteen billion, five hundred twenty-three million, four hundred fifty-three thousand, two hundred eight".