12533385547 has 4 divisors (see below), whose sum is σ = 12709912176. Its totient is φ = 12356858920.

The previous prime is 12533385521. The next prime is 12533385583. The reversal of 12533385547 is 74558333521.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12533385547 - 2⁷ = 12533385419 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12533385497 and 12533385506.

It is not an unprimeable number, because it can be changed into a prime (12533383547) 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, 88263208 + ... + 88263349.

It is an arithmetic number, because the mean of its divisors is an integer number (3177478044).

Almost surely, 2^12533385547 is an apocalyptic number.

12533385547 is a deficient number, since it is larger than the sum of its proper divisors (176526629).

12533385547 is an equidigital number, since it uses as much as digits as its factorization.

12533385547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176526628.

The product of its digits is 1512000, while the sum is 46.

The spelling of 12533385547 in words is "twelve billion, five hundred thirty-three million, three hundred eighty-five thousand, five hundred forty-seven".