13524523421 has 8 divisors (see below), whose sum is σ = 13725465600. Its totient is φ = 13324325040.

The previous prime is 13524523403. The next prime is 13524523423. The reversal of 13524523421 is 12432542531.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13524523421 - 2²² = 13520329117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13524523423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 149261 + ... + 222098.

It is an arithmetic number, because the mean of its divisors is an integer number (1715683200).

Almost surely, 2^13524523421 is an apocalyptic number.

It is an amenable number.

13524523421 is a deficient number, since it is larger than the sum of its proper divisors (200942179).

13524523421 is an equidigital number, since it uses as much as digits as its factorization.

13524523421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 371899.

The product of its digits is 28800, while the sum is 32.

The spelling of 13524523421 in words is "thirteen billion, five hundred twenty-four million, five hundred twenty-three thousand, four hundred twenty-one".