13523304532421 has 8 divisors (see below), whose sum is σ = 13594259635200. Its totient is φ = 13452351018160.

The previous prime is 13523304532399. The next prime is 13523304532481. The reversal of 13523304532421 is 12423540332531.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13523304532421 is a prime.

It is a super-2 number, since 2×13523304532421² (a number of 27 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 (13523304532481) 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, 19204715 + ... + 19896423.

It is an arithmetic number, because the mean of its divisors is an integer number (1699282454400).

Almost surely, 2^{13523304532421} is an apocalyptic number.

It is an amenable number.

13523304532421 is a deficient number, since it is larger than the sum of its proper divisors (70955102779).

13523304532421 is a wasteful number, since it uses less digits than its factorization.

13523304532421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 794259.

The product of its (nonzero) digits is 259200, while the sum is 38.

Adding to 13523304532421 its reverse (12423540332531), we get a palindrome (25946844864952).

The spelling of 13523304532421 in words is "thirteen trillion, five hundred twenty-three billion, three hundred four million, five hundred thirty-two thousand, four hundred twenty-one".