13545897533 has 4 divisors (see below), whose sum is σ = 15481025760. Its totient is φ = 11610769308.

The previous prime is 13545897527. The next prime is 13545897557. The reversal of 13545897533 is 33579854531.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13545897533 - 2¹⁴ = 13545881149 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 (13545897133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 967564103 + ... + 967564116.

It is an arithmetic number, because the mean of its divisors is an integer number (3870256440).

Almost surely, 2^13545897533 is an apocalyptic number.

It is an amenable number.

13545897533 is a deficient number, since it is larger than the sum of its proper divisors (1935128227).

13545897533 is an equidigital number, since it uses as much as digits as its factorization.

13545897533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1935128226.

The product of its digits is 6804000, while the sum is 53.

The spelling of 13545897533 in words is "thirteen billion, five hundred forty-five million, eight hundred ninety-seven thousand, five hundred thirty-three".