13542321533 has 32 divisors (see below), whose sum is σ = 15741734400. Its totient is φ = 11538616320.

The previous prime is 13542321521. The next prime is 13542321557. The reversal of 13542321533 is 33512324531.

It is a cyclic number.

It is not a de Polignac number, because 13542321533 - 2³⁰ = 12468579709 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 13542321533.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13542321833) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3120341 + ... + 3124677.

It is an arithmetic number, because the mean of its divisors is an integer number (491929200).

Almost surely, 2^13542321533 is an apocalyptic number.

13542321533 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

13542321533 is a deficient number, since it is larger than the sum of its proper divisors (2199412867).

13542321533 is a wasteful number, since it uses less digits than its factorization.

13542321533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4637.

The product of its digits is 32400, while the sum is 32.

The spelling of 13542321533 in words is "thirteen billion, five hundred forty-two million, three hundred twenty-one thousand, five hundred thirty-three".