12001716533 has 4 divisors (see below), whose sum is σ = 12007463820. Its totient is φ = 11995969248.

The previous prime is 12001716523. The next prime is 12001716547. The reversal of 12001716533 is 33561710021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 33561710021 = 7 ⋅4794530003.

It can be written as a sum of positive squares in 2 ways, for example, as 5399016484 + 6602700049 = 73478^2 + 81257^2 .

It is a cyclic number.

It is not a de Polignac number, because 12001716533 - 2¹⁸ = 12001454389 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12001716496 and 12001716505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12001716523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2870510 + ... + 2874687.

It is an arithmetic number, because the mean of its divisors is an integer number (3001865955).

Almost surely, 2^12001716533 is an apocalyptic number.

It is an amenable number.

12001716533 is a deficient number, since it is larger than the sum of its proper divisors (5747287).

12001716533 is an equidigital number, since it uses as much as digits as its factorization.

12001716533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5747286.

The product of its (nonzero) digits is 3780, while the sum is 29.

The spelling of 12001716533 in words is "twelve billion, one million, seven hundred sixteen thousand, five hundred thirty-three".