13523531504 has 80 divisors (see below), whose sum is σ = 31547028480. Its totient is φ = 5486227200.

The previous prime is 13523531503. The next prime is 13523531507. The reversal of 13523531504 is 40513532531.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13523531503) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4043657 + ... + 4046999.

It is an arithmetic number, because the mean of its divisors is an integer number (394337856).

Almost surely, 2^13523531504 is an apocalyptic number.

13523531504 is a gapful number since it is divisible by the number (14) 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 13523531504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15773514240).

13523531504 is an abundant number, since it is smaller than the sum of its proper divisors (18023496976).

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

13523531504 is a wasteful number, since it uses less digits than its factorization.

13523531504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5278 (or 5272 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 32.

The spelling of 13523531504 in words is "thirteen billion, five hundred twenty-three million, five hundred thirty-one thousand, five hundred four".